FWIW:
a) The main reason I didn't try it out is that I doubt it would save me much time, as I have had the shortcut keys and/or menu locations of most of those commands stored into muscle memory for years now.
b) All the students' workstations at school have plain-Jane installs of PS, and I don't especially want to have to have one system for accessing those commands on my own computer and a different system at school.
c) I'm with Sierra's risk/benefit analysis, especially when it comes to installing beta versions of SW that's not likely to substantially benefit me. Your statement that installing your SW won't have any unintended side effects is probably correct, but my perception of the potential benefits to me don't trump my concerns about risk. If your SW was something I really saw a use for and which couldn't be easily done another way, sure, then the calculus would be different, but that's not the case here, at least for me.
There are plenty of folks out there that just love being SW testers and doing so for free. Some even have a 2nd machine around specifically for this purpose. I'm just not one of them. In contrast, I do have a very large number of mature, well-tested plugins on my main PS box.
d) At the moment, I've got too much paid PS work on my plate to spend any time participating in tests like this.
I hope I've not been too blunt, but hopefully my response will give you some insight why other folks like me might not have jumped at this opportunity.
Best regards,
Tom M