Yes. "Gimp" in UK English is not a word you say in polite company, like calling your software "slut". Sure, it's fine to speak of with a close friend but difficult to even mention to people in certain circles. I don't know what's wrong with calling it "The [GNU] Imp", an imp being like a fairy/pixy (but with a sense of mischief too), like Puck. The mascot could be kept as it fits the description imp as well as it fits anything (I've no idea after c.20 years what it's supposed to be, though I recall looking it up once).

Maybe "Imp" is offensive in other languages? (Nothing other than alternate English meanings shows on Wiktionary).