really though, the #1 mission for the batsmen is to score runs, the bowlers #1 mission is to get wickets.
Economy is 2nd, in ODI it's more important than it is in test, because you can have to lowest economy but without wickets its not taking your team anywhere.
For t20 what i would like to see is the balance between bat and ball by which i mean is- ok t20 isn't about letting the ball go and blocking right? It's about sixes well the only thing i want with that is the bowling side of it, it shouldn't about being economical but about getting wickets. So basically by the balance between bat and ball in t20 should mean the balance between sixes and wickets.
I mean I see a lot of wicket fall but those are games where one side is just doing bad but the other side doesn't really lose much of their wickets.
I fine with shorter boundaries in t20 but longer ones in odi's. But I was thinking what is helping the batsman in od cricket that doesn't help them in test, well 1st the free hits, hmm ok im fine with that no ball should be punished and should try to get rid of that. To counter that, we shouldn't award just mad slogging and miss hits, things like that so (this -the idea- i got from a cricinfo quote) why don't we punish the batsman for things like that. Well how about free ball as in say it's a swing and a miss (the definition of swing and a miss would be -when a batsman attempts to hit the ball but unintentionally is unable to make contact with the ball. It will be up to the umpires to decide if it is a swing and a miss.) then the next ball the batsmen can not score a boundary, they can run manually up to 4 runs at max. This may encourage the bowlers to be more aggressive knowing that they can't be be hit for a boundary. It will also discourage just swinging at the ball wildly instead of playing real shots. This could be applied to ODI's too but i think it's needed more in T20's
Also another that od cricket has that test doesn't is powerplays, countering that could be dangerplays where the fielding team's being allowed to tamper with the ball. (I know it's drastic but bare with me, it would help with like inswingers etc bowlers could be more creative) So lets say for 10 overs you can temper with the ball but the umpires will have a checker which will limit how much the ball can be tampered say like the ball has to go through a circular thing so the ball is still circular and and how long lose end can be so it isn't like lather just sticking out the ball and hitting the bat- no; after the dangerplay is over the ball is replaced with a new used ball. And you can't take dangerplays in the 1st 10 overs but you can take it any other time and break it up in 5s. In t20 it would be like 6 overs where you can tamper with the ball or say take a used ball- you can temper with the ball for all 6 or 3 then take a used ball or vice versa. 'Cause in t20 you don't really get a used ball, cause in 20 overs it's not that different so you can ask for a 30 over used ball etc. during dangerplay. In t20 would be after the 6 overs of powerplay.