Why don't we just not have siggy pics? Or avatar pics, either, for that matter. An objectionable photo can be put there, too, right? Anyone at anytime can decide they are offended by someone else's self-expression. I'm watching what I eat so I don't want to see pics of pies and cakes and etc...so then what? I'm also not in a relationship and can get quite tired of seeing pics of happy couples and wedding pics. Just have a post your wedding or happy couple pics here thread so that people who want to look at them can go there and do so. All of those should be removed, too.
Remove all of the siggy pics, put them in the gallery, and whomever wants to look can go over there and look.
I understand that this is a "hairboard" but everything under the sun is discussed. If we only ever discussed hair...but then someone could have a problem with you showing your brastrap, or your armpits, or even your shoulders. Have a separate forum for progress.
ETA: Actually, I just had a thought. People showing waste length and hip length or showing their progress as they are on their way...they are showing hips and butts...and if someone has a problem with a brastrap, they should definitely have a problem with a rearend, right? Nope. No hair or progress pics in the siggy at all. I know that this is not a democracy but that's my vote...then no one would have to worry about their pics being too big, either.