I personally think that twenty20 should be something that is played exclusively at the domestic level. The 1 twenty20 for each series is all that is necessary. Here are a few things which cricket could use:
- Increase the Test series minimum from 2 tests up to 3 tests
- Limit ODI series to 5 odis (The 7 odis which they play in india is really boring)
- More Odis for Associates against full members. Tournaments like Asia cup could include more associates.
- More nations playing in the Intercontinental cup.
- Regional twenty20 tournaments world 2020 (Groups like asia, africa, americas, etc)
- Third Place matches in tournament such as 2020 world champs, world cup and champs trophy.