@alecgdouglas Hey, thanks for the fantastic app, but I'm having the same issue as several other users here where trying to play videos older than around 6 to 12 months just results in a 404 error. (Recent videos and live streams play just fine.) It seems to affect a bunch of different devices (I'm on a Sony Android TV), and I'm not seeing this problem on other apps like the Video Bomb Android Phone app.
I've been having issues with having issues with livestreams in apps since the Control playdate last week, I guess this is the cause then. I reported it in the Video Problems thread, and yesterday Rorie told me he's having the engineers look into it.
I'm suddenly not able to watch livestreams in the Video Bomb android phone or the GB Enthusiast Android TV apps. It worked just fine yesterday with the Dreamcast stream, but now they simply don't appear in the apps. Regular premium videos play just fine, and logging in and out doesn't seem to change anything.
Ah, Mag, my first frame... I guess it would have been 5 years ago. She used to be completely overpowered against Corpus because Polarize would cut a percentage of enemy shields and thus scale indefinitely with enemy level. With a sufficient power strength and range you could run through an entire map filled with 100+ level enemies spamming that one power and laugh as they all blow up around you. They eventually nerfed Polarize so it doesn't scale, but also gave it the ability to strip armor. So you might find it helpful against the Grineer as well.
For tougher missions you definitely want to bring your best gear, that's what it's there for. If Defense is giving you trouble though, you might want to look into that Vauban you have on your list. He's a good crowd control frame, his Bastille power especially is great for keeping overwhelming enemy waves at bay and giving yourself time to deal with them.
Valkyr used to be a favorite of mine, when she was modded properly you could keep her final power - Hysteria - going nearly continuously, making her basically permanently invulnerable. But the addition of Corpus units that cancel your powers and a nerf that significantly increased energy drain made her much less appealing to use.
Going back to the Plains and Fortuna now isn't actually a bad idea either. While the higher level content will probably be beyond you, even the initial, low level bounties can give some decent mods and other rewards that might be of help you.
And finally, I would really suggest you try turning on matchmaking, at least for some of the missions. It is what the game was intended for after all, and as you progress through the solar system to the outer planets, you're far less likely to encounter the crazy over powered players running through everything, and more likely to run into people like yourself who are playing through for the first time and just trying to complete all the nodes. And in endless modes, especially Survival, but also to an extent Defense and Interception, you're always free to just ignore the others and go off in a corner of the map and do your own thing.