So far, the changes to XP have been good, but they need to be better. Mainly more of the overly grindy challnges or ones that are effectivly impossible, like kill 5 spartans with the repulsor and a wall and kill 3 wraiths, need to be removed. The wraiths one relates to a btb issule ill touch on in a moment. I would also remove gametype spesifc ones that take more than 1 game to complete, such as complete 2 ctf or win 5 slayer, those should be removed due to the game lacking mode spesific playlists
as for BTB, the time it takes for air, and even more so heavy, vechiles to drop in needs to be lowered A LOT, I rarely have games last long enough for bansheese to spawn, and honestly tanks dont ever spawn at all, meaning that part of the sandbox is never used and completeing challnges related to tanks is impossible.
also, quickly vechile note, PLEASE 343 add the choppers light vechile killing ram back in, without it its just a worse ghost with no real reason to exist.
Also remove challenges that froce poeple to play ranked and do something about leavers in ranked, maybe have bots replace them like in arean, and have thier AI skill leveled baised on the average of the other players?