That's a bit worrisome to hear, but I'll have to get at least one in-hand to judge for myself. It seems everyone agrees that Iron Studios base paint is lacking, which is a bit odd. I wonder if they rush the paint job on, what they consider to be, less key areas of the statues to keep their cost down. With the prices continuing to rise and the bases becoming more complex I don't know if they'll be able to keep that up and keep fans purchasing.
I can tell you if Hawkeye has the issues that you mentioned (not fitting the base, visible glue, etc.) then I'll send him right back to SS. I wouldn't accept that at any scale.
I have quite a few 1/4 scale statues. I'm mainly interested in this line because it seems to embody the films quite well. That's something that hasn't been well done in 1/4 scale and would be prohibitively expensive anyways.