I agree with a lot of this, I really like this game but the fuel and starting server strength is very punishing for those that don't know how to manage them optimally. I actually really like the mechanics a lot but def should be a slower drain, at least a little. To help you out though, I will give a tip at least for the fuel, when you are going down a hill, stop holding W. let the ATV roll, it'll keep accelerating without using up your fuel, you'll actually go above the speed cap and can end up going pretty fast, so if you have good control and know where you are you can get back to base quickly without wasting any fuel.
Also, for the tasks, I'm pretty sure all you need to do is make sure the satellites are capitalized before the hash value, and you'll get your reward:
I.E:
Walter XXXX
Joelle XXXX
Noemie XXXX