Originally Posted by
Biomega
Some issues with that. For one, there's a REASON they introduced those buffs - they want to enforce class/spec diversity. Why? Because clearly without it, there'd be a stacking problem. And what do you think would make stacking problems more pronounced: a 20-man group or a 10-man group? The smaller your group the fewer slots you have to give away or just go "eh we'll take whatever" for. A tightly tuned 10-man would be all the more strict about who you take if you want to be competitive. That's the LAST thing Blizzard wants, considering people crying that they're not let into groups is one of THE most prominent complaints people have. And it gets worse and worse the smaller the group size.
Unless you go full homogeneity (and that's obviously neither feasible nor good design) there'll be disparities, and the fewer slots you have to give away for a group the more discerning you tend to be about who fills them.