The image fixer was implemented before the ET style sheets specified a maximum image width. It was to force a max width in the case where an overlarge image was posted. I removed it... In fact, I cannot find the bit that sticks that in the menu in my files. But, still, there it is. Hmm, strange. I'll keep looking!
Speaking of deprecated features, maybe the copysidebar locale files could be retired (the variables are in the big locale file already). *Traitor*, n. A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.