We all know runes and rune pages + champions and sometimes icons cost boat loads so i got suggestion that will improve gain of it just a bit and make players want to lv up !
-When you lv up 1-5 you get 450 IP
-When you lv up 6-10 you get 1350 IP
-When you lv up 11-15 you get 3150 IP
-When you lv up 16-20 you get 4800 IP
-When you lv up 21-25 you get 6300 IP
-When you lv up 26-30 you get 7800 IP
also maybe as ranking under or above gold is meaningless you could get
(rank + 10 x MMR/50)RP = end of seasons RP
let's say your Gold 3 20LP that would make 1500 MMR so
bronze /1/; silver /2/; **gold /3/**; plat /4/; diamond /5/; master /6/; challenger /7/
(3 +10 * 1500/50)RP = (13 * 30)RP = 390 RP
lets say your number #1EUW currently OP.GG ( ''CW Freeze'' Challenger 1,337 LP) 3,223MMR so
(7+10* 3,223/50)RP = (17 * 64,46)RP = 1095.82 ~ 1096 RP
Also this would keep ppl from trolling in ranked as every MMR point means !