dont agree with the one bowler 5 overs thing, doesnt make sense as teams would need only 4 bowlers and a part timer, practically playing one extra batter.
impact player has to go
powerplay should be 4 or 5 overs
Sachin Tendulkar wishes to bring the balance in T20s/IPL: [Espn Cricinfo]
1) Impact Player rule needs to go.
2) One bowler to bowl 5 overs.
3) Two Powerplay: 4 overs for batting team & 2 overs for bowling team with 1 extra fielder outside during bowling Powerplay.