I've been enjoying the game but I do have some minor gripes. I feel like the duration on the jet packs feels criminally short. Like the key move to closing the distance on the monster's trail is the forward boost but it takes up so much fuel that by the time I have closed that gap I don't have enough left to boost up the sheer cliffs that the monster just climbed. I can see that they want to give monsters the mobility advantage but a handful of times I'm just sitting at the bottom of a cliff waiting for my jet pack to recharge or I don't have enough juice left to boost away from aggro-ed wildlife. I sort of wish forward boosting up a slope would let you ski up it instead of stopping your momentum completely but still costing the fuel for a full distance boost. Honestly it's not that big a deal, if anything it's just another part of the learning curve of fuel management.
I think the perks don't feel all that meaningful. It's weird to think that since the perks are like the main unlocks during global leveling. The only times I'm not using jet pack recharge or jump height is when I use increased damage for the sake of leveling up weapon skills or quick swap equipment with Val. Maybe I should experiment more but so far I don't find them to impact my play style. If they let you choose two out of that phat list it might be enough to make it feel like you could give you a distinct edge over the monster. Same kind of goes for the monsters. They just seem like a wash so I choose faster eating almost every time.
When it comes to the Wraith based on my limited experience I'm in the same camp as @larrydavis in that it's not so overpowered. I've fought a Wraith twice on random teams and both times have won. However both times he got to level 3 and we just ended up camping the reactor. The issue is that it's super hard to trap early on and even we do it's mobility makes it almost insurmountable to do meaningful damage. Granted I've sneaked away as a Goliath while still in a dome so I suppose it's a case by case basis. As good as it is to have Hank's shield his orbital strike seems somewhat useless considering the speed of a Wraith. I feel like Bucket would be better for sentry turrets doing damage but also his UAV seems pointless.