The crucible is not really about rewards. See the crucible handler and vanguard at the tower for the crucible rewards. Or loot in caves and do strikes!
That's the only reason I'm playing crucible is for the marks but if I do the best it would be nice to get a reward so I keep playing and it's frustrating when someone who sucked that match gets rewarded and you don't even if I got a few extra marks for doing better I would be happy
I'm just not a fan of crucible so for me it kinda a chore to play I know I can't get rewards every match I play. I just want to get my marks and be done so i can you buy the gear I need. I think they should just change the rewards to if you place first you get 4 extra marks if you place seconds you get 3 extra marks and so on. then people like me can't go and bitch on forums because then it fair