Well, I gave it a shot. While it did improve the button sensitivity, I didn’t find the interface to my liking. Each feature behaved differently. I found the font to be too small for me to read easily, especially when exercising. I really missed the original OS’s ability to adjust the volume while the other buttons were locked. I can appreciate that Rockbox provides more functionality, but it was overkill for my minimal needs (FM radio and podcasts).
I had a bit of trouble uninstalling Rockbox using the management utility, but Google is our friend. Apparently taking it off a Fuze+ is a common problem, so I was able to find plenty of references for getting it off.
Thanks for the suggestion. I’ve decided I’ll get used to the original interface. Despite the button sensitivity, I find it easier to use.