Yeah, I don't mind having RP's for placements, but I think it's too high right now. Could easily be 10 to the winner, 7 for second place and 3 for 3rd place for instance, and just leave it at that.
The cap of 5 RP for kills is stupid.. I mean, if you can't kill more than 5, that's up to you. If you have a great game, you could easily get well-more than 5... A cap of 10k would be ideal. You should be rewarded for the kills you get.
I also think that they should give RP for both assists and revives, to encourage people to play as a team. Perhaps even RP for other stuff like if lifeline heals teammates or something, but I obviously understand that it would be difficult to implement something like that.
If you play with randoms now, at least on PC, and you get knocked, your mates will run away. People are afraid to get into fights because they lose RP if they die early, so most people are going for placements... It takes away all the action early- and mid game... But it's often insane in the end.