At first I thought it was annoying to have an external bank of caps to have to mount independently from the ESC, I've seen some folks do a poor job and they flopped around and got chewed up by the center drive system, but I think it's worth the risk by having the flexibility to easily swap out the cap bank if something goes wrong... I have never had to swap the cap bank, but I know of 1 guy who recently popped his caps and replaced them without issue, also heard of several others on the forums who also have successfully replaced their cap banks after reversing polarity.