Buckets UAV is like a hunter that can constantly use jetpack.
Upsides to UAV:
The UAV flies faster than any hunter (except maybe caiara with her speed boost)
If you have a mic or chat, you can tell your team to follow your UAV icon instead of waiting for the track to work.
Downsides to UAV:
Your body doesn’t move from where you launched the UAV, leaving your body vulnerable to wildlife, a monster if it circles around, and you have to journey to your teammates if your team traps the monster before you lock onto it.
Since Beta, you can’t lock onto a sneaking monster and if the monster sneaks while your progress bar is going, it all of a sudden goes back to zero. (In alpha, you could track a sneaking monster and ping it while in UAV mode)
As for the “Pay to Win” aspect, which I’m assuming you mean the prepaid players got access to T3 hunters and monsters, That’s not “Pay to Win”. All the monsters and hunters are balanced in a way that any match could go either way.
Pay to Win in the gaming world means you pay real money for an obvious advantage, there were no micro transactions avaliable in Alpha or Beta, so being anal about the T3 early access doesn’t count.
In the game, there will be no transactions that give you much more than a reskin or a few extra hunter/monster picks. The way that TRS is trying to make this game is that you’d be able to take down the newest monster with any hunter combo, and communication.
If anything, it’s a “Pay to Play with more options but you won’t be punished for not buying them”