We'll see how it looks towards the end of this league and decide from there. Once you start memorising your units BS, WS, Strength and Toughness, combat and the like becomes, much, much quicker.
I'm also not a fan of allies, it seems like it would lead to a lot of really cheap army lists and it's rarely fluffy (don't even get me started on Necrons and Blood Angels allied) Perhaps in large point games but anything under 3000 and it just seems silly.
I think the main problem is it only makes sense for a few armies, and for the rest they've just jammed it in whether it makes sense or not just to be equal.