Yes, I am following all games these days, be it tri-series or bilateral series between Eng vs Pak ( closely) but no one talking here about them except few

To sum up all matches: Bowlers taking hits in every match, Batsmen keep hitting bowlers all around the ground for fun. Thanks to flat-dead pitches.
Yeah, Bangladesh is ahead of Windies in the longer format. Windies can win a couple of matches with power hitting but its not a long term solution if you are competing with top teams in World Cup. Let's see what happens during Warm-up matches.
Ireland will take some time, but they will get there if they can hold up on their domestic talent.
Kiwis and Proteas are more or less same in terms of overall strength. They both are a very competitor in any format. so for me its tie between them.
If the Windies side is in full strength, then they can easily beat Bangladesh. Despite being a test nation for almost two decades, BAN is just not up there. Their domestic structure is not very organized and even now they depend too much on the Dhaka club sides, rather than diversifying out of the capital city.
And Ireland is a gone case. Irish players are eligible to represent England, and therefore if a player is at international standard, then he'll just dump his motherland and adorn the colors of England (the same with the case of Scotland and Wales). Without their best players, they can get nowhere. Imagine an Irish side with Eoin Morgan and Ed Joyce. They'll be able to give tough competition to anyone. But we'll never get to see such a team.