Reiterating what I said in my previous comment. Really impressive work for a newcomer here. If I saw these in a tournament I'd assume they were built by someone who's been active on the forums for some time. Fuse would definitely benefit from a bump in skin resolution up to 1024x1024 or something like that but other than that it's a slick looking bot.
The extenderbot tombclone is really nicely executed too. I tend not to be a fan of tombclones but you've done a good job of making this one look sturdy and also relatively unique for such a common design. Your usage of polycarb is particularly nice as that's something that people so often mess up IMO. In terms of combat effectiveness it probably won't be particularly effective as you've noted, but for a second extenderbot it's really impressive in terms of looking like a well-thought-out design executed by someone who actually knows what they were doing.
Keep up the good work!