Eh I'm pretty indifferent about burn cards they seemed like a pretty weird addition to the game.
But I think the current system is fine aside form amped weapons which is probably the most braindead ability in this entire game. Its just press X to do more damage thats literally it.
One thing I've noticed about this game is that the people who abuse the movement system perform the best. If you play this game like you would an older CoD or Battlefield game you are going to get your **** pushed in. If you aren't flying across the map and jump-strafing the **** out of people then you just aren't playing the game right.
That's probably my favorite thing about this game is that it brutally punishes campers. If you play super aggressive with phase-shift and stim you are practically untouchable and you'll run rings around campers while hipfiring them to hell.
IMO this game is what I wish Warframe's Conclave was like. The movement system is a bit more restrictive and far less chaotic than in Warframe but combat is centered around it so its only fair that it remains simple. I guess the movement system in Warframe works well enough in PVP but then the weapons all feel like they do nothing.