If ICC is serious about spreading the cricket world wide then they should introduce 24 team world cup tournament for ODI and T-20 instead of 10-12 teams but no they are not interested as they don't want to repeat 2007 like scenario.
There are no world class 24 countries who play cricket professionally and if they include 24 teams, don't you think the first round of the world cup will be very boring as it will only be played to eliminate the weak 10-15 teams from the tournament.
Secondly what was the 2007 scenario ?
We discuss this scenario " boring play off in case of 20+ team World Cup". Yeah it would be boring may be 1-2 upset here n there but that's the only way to encourage accociate members, forget about test match, just focus on the shorter format.
2007 wc has 16 teams, India and Pakistan got kicked out early, Which resulted economic disaster for ICC and host West Indies.