I guess having having a warning against your name doesn't help.
Having an old warning won't get you blacklisted, but I suspect we'd only consider someone who'd had their warnings reduced. (For those unfamiliar with warning reductions the instructions on how to get them are in the rules thread, you probably should have read it when you were warned

)
Or repeatedly criticizing some of Beth's design decisions.

The way Morrowind handled fatigue was lousy - either you slowly plodded everywhere or you were too exhausted to be effective when you were attacked. Oblivion's setting felt far too generic in my opinion. I realize that it served as a counterpoint to the Oblivion portals, but it just felt bland - Skyrim did a much better job of blending traditional and unique elements. Broken Steel was fun but being able to level past 20 completely broke the system (although I don't think this could have been avoided without overhauling the whole thing).
It's fine to be critical, although being constructive goes a long way. Someone who is badmouthing Bethesda or constantly spiting vitriol at a recent title won't be considered as a mod, but then presumably they wouldn't want to be one. I will admit there are times I withhold posting criticism here because of the mod title, but its rare.
Very.
Well I already did that so... I guess I messed up my chances...
Yes you did, and the next time we consider new mods (probably in 12+ months) this incident
will be at the top of our list. 