it's been terrible scheduling rather than the format.
well the format could be bad but it's been made impossible to tell. we've now got sri lanka v south africa to watch, but it will mean nothing. india v england will be similar.
why relegate all the important early games to meaningless status?
well, the answer is because it protects the big teams, even if they get beat they have a second bite at the cherry knowing they have to win against the other big team, but with the advantage that they will have likely already qualified (run rate usually helps the big teams as minnows tend to win games closely and get smashed when the lose)
so after the tournament we'll have the usual "the minnows shouldn't be there/were uncompetitive" line, despite the fact the tournament was geared up to make them as uncompetative as possible because if one of them did sneak through we'd have scores of whinging from the ICC about losing sponsorship (like the 2007 world cup) and fans not seeing their team in the last 8.
It is a bit too much like the 2007 World Cup, the organisers and TV wanted the big eight teams to qualify and play each other in a round robin and two teams upset the applecart because of this 1st stage format offering banana skins.
Big team loses to small team, then to the other big team, small team goes through. That's why they scrapped it for the last World Cup I'm sure, made sure the teams they wanted through got there.
The key is playing enough games in the round that the best teams will go through, or the teams that play best. Minnows can manage an upset or two, but play them in two groups of six round robin and they tend to fade. So for say 33 games they could have played two groups of six (2 x15 games) and then semis and a final.
Maybe instead of playing meaningless series all over (ODIs) they should have the World Cup every four years and a round robin World Championship in the middle of the four years, like the Euros and World Cup in football. TV would probably dictate a 10 team round robin had to be played all games on a different day so someone could watch the lot, so that's 45 games plus a final or semis IF they decided upon them which I wouldn't - just make it a league with Champions, Runners-Up and maybe third as a recorded achievement.
Inbetween the World Championship and World Cup they
could play round robins in smaller tournaments to decide some of the 10 teams, or in fact proper qualifiers for all countries. Groups like at the World Cup but everyone bar maybe holders to qualify. It would certainly give meaning and interest to every ODI played. 4-5 team qualifying groups in the summer, neutral venue round robin with say :
Qualifying 1 : Australia, Zimbabwe, Ireland, Kenya, Papua New Guinea
Qualifying 2 : England, Pakistan, Canada, Namibia, UAE
Qualifying 3 : South Africa, Bangladesh, Scotland, Bermuda, Hong Kong
Qualifying 4 : Sri Lanka, West Indies, Holland, USA, Nepal
Qualifying 5 : India, New Zealand, Afghanistan, Denmark, Uganda
Gives the minnows some practice and exposure against big teams without cluttering a finals competition with them, gives the pretenders a chance to show what they can do, and the big teams can do their bit while having a nice warm up for a bigger competition ahead.
Two teams qualify from each group. I've deliberately included Bangladesh and Scotland, Zimbabwe and Ireland in the same groups to make it as tough for the biggest team as possible and also to give the non-Test teams a better chance of qualifying without facing say India and New Zealand or England and Pakistan. Round Robin would only mean 10 games per group so wouldn't last forever, assuming TV didn't go OTT with scheduling.
Or at a push, certainly if you used it for World Cup qualifying, you could have three teams qualify or a best two third placed teams clause and make the finals 12-14 teams. 16 is too many, there need to be at least half the teams or more good enough when you start increasing numbers. The European Championships of football are expanding the finals to 24 teams out of about 53 eligible. Means teams like Wales, Scotland, Latvia, Estonia etc can qualify, but what will they add to, and get from, the finals when it will be merely increasing the numbers and not the quality?