I added MobiPerl to the new MobileRead development hub. It is at:
https://dev.mobileread.com/trac/mobiperl/
There is a track system there and I tried to add tickets for suggestions and bugs. I have probably forgotten many of them. So if you miss any suggestion add it as a ticket or repeat it here and I will add it so I do not forget it.
The code is in subversion so anybody can check out the latest version or a specific version. But do not assume that all versions will work.