Now i could completly fill my post with what I would like to see in ME2 but I want to know what you guys think should go into Mass Effect 2.

Take out all the driving sections.
Triple the games length.
Add the influence system from Kotor 2.
Make switching spells easier.

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Big Do-six: "That's why they pay me."

Space fight
More place in the Citadel
Better inventory system
I want me biotic to be more power full like in the force unleased

Have the uncharted planets less empty
Space combat
More major planets
Being able to interupts someone mid conversation
Influence System from KOTOR II
More direct control of your squadmates
Rewamped inventory system
Lock the framerate

Just make another one and I'll be happy.

no more driving
longer main story
space combat
Better invetory system
A hot key system
Influence system from KOTOR2

Include more vehicles for driving(different types like for flying, etc), more, fleshed-out, side-quests(this was confirmed), bigger and better planets to explore. 

more alien sex

more places in the citadel
more side quests
more planets to land on^
longer story
more balanced classes
influence system from kotor 2
no more elevators
better framerate

I am going to play this game so hard.

More interesting side quests (No more generic bunker, kill everyone and get out missions.)
Longer main quest.
More depth to party member character development.
Eliminate elevators. (would rather have small load times.)
More combat.
No more driving sequence, or better mako movement and combat.
Planets should have totally different look and feel to it, like Noveria and Feros.
New alien races.

Some way to continue your character from ME1 (because of the choices you make)
Fix the Mako
Fix the framerate
Longer main story
Unique sidequests
New abilities
New characters
More races
Bigger, more explorable universes.

"Have the uncharted planets less empty
Space combat
More major planets
Being able to interupts someone mid conversation
Influence System from KOTOR II
More direct control of your squadmates
Rewamped inventory system
Lock the framerate
"

Personally I'd like more dialogue from alien squad mates. I liked Wrex and Garrus more than Kaiden and Ashley, but apart from the evil doctor side-mission Garrus gives you, it felt like there wasn't as much to talk about with them as with the humans. Wrex doesn't even mention the Rachni queen after the mission.

More cities/people to talk to
Less or even better no driving at all
Longer

Larger cites, alot more side quests, well written side quests (not the same thing over and over again, different things, like oblivion), long single player, more ablities, more classes, more races, cut out most of the criving sections, or make a better car, space battles, bigger fights.

Better sound (the weapon sounds were a little weak)
Better driving control (or no driving at all)
Better character handling (felt less like Gears of War and more like GRAW, the later of which sucked)
Appropriately sized areas with more side quests and things to do (better to have smaller maps filled with more details than huge, bleak maps)
Endings based on what you do in the game, not your choices near the end

I'm sure there's more, I just don't feel like listing it all.

Better Driving

-More planets (main and side quest)
-More variety on said planets
-Fleshed out sidekicks: I like Garrus and Wrex and Tali talking. Lets hear some more.
-Better sidekick AI/more control
-Less glitchiness
-"Bitch please" response option in conversation

There's more, but I can't think of it right now.

I want planets that have ciities besides just main quest ones.  My biggest dissapointment with Mass Effect was that all the extra planets were barren.  I think it would be cool to go to a planet that had a civilization, and explore their city, and get sidequests from it and stuff.

Here's an idea...make the gameplay good?

A better freaking inventory system.
More squad control.
More to do on the planets.
Keep that length.

How is it still ok in this day and age to have endings based on a single binary choice at the end? Now granted, in this the plot unfolded SORTA differently throughout, and the ability to go both Paragon and Renegade (instead of just 1 morality meter) was actually quite inspired, and I don't think gets enough credit, but a lot of the above comments nail it on the head: if you want to see both endings, save right before you make that "final" choice,  and then make the different one.

make a longer story line with less sidequests, and being able to make an alien player.

"Some way to continue your character from ME1 (because of the choices you make)"

"more alien sex"

"I am going to play this game so hard."

Please get rid of the fucking elevators.  Please.

Greater detail to the planets

I'd like them to focus on fewer, more detailed side quest worlds and completely cut the collection quests or at least not have achievements that rely on completing them.

Also I'd like a Salarian party member, kinda random but I thought those guys were awesome

"

I'd like them to focus on fewer, more detailed side quest worlds and completely cut the collection quests or at least not have achievements that rely on completing them.

Also I'd like a Salarian party member, kinda random but I thought those guys were awesome

"

Keep it at a stable framerate
Keep the texture pop in under control
A more diverse soundtrack
Make the sidequests more intriguing and fleshed out.
Use my character from my gamesave but allow me to change classes (I think this was confirmed on the Bioware podcast, but not entirely certain)
Classes should vary more, in ME it seemed like the classes were essentially the same but with one or two abilities removed/gained and other moves weakened

Flesh out the main story and the Citadel.  Also, add more population to the planets.

The core gameplay mechanics are solid, so not a whole lost needs changed, maybe just some minor tweaks.  The frame rate could use some work so there aren't constant dips and less texture pop in would be nice.  A better inventory system would help keep things more organized.  Other than that just adding a new class or two and some new skills/abilities.  And of course making sure the characters/story/dialogue is excellent, just like the first one.