I agree with one of the previous posters who said he wouldn't be sad if ODIs were consigned to history. We are playing far too much of it and should definitely be limited to 5 per series.
I think 32 is a few too many for 2020 world cup. Half those teams are not of first class standard. Keep it to 16 teams with 1 group stage and then straight knockout. Decide the qualifiers to this world cup by running a 20 20 competition for associates.
Run the 20 20 World cup every 4 years so the schedule will be 50 over World Cup, 2 years Gap, 20 20 WC, 2 Year Gap, 50 50 WC etc.
Get rid of champions trophy as soon as possible!
Reduce number of teams in the 50 over world cup back to ten or twelve and reduce its length to a month and a half. The 2007 one was so long.