Dev is pointing to one of the major issues I have found.. the other is a front-end. If Unity-Linux expects to allow users, quazi developers to create something usable to family and friends then it has to have a decent front end. I'm not saying we can't have these other options in a repo, or even better yet that you can't create your own using smart, apt-rpm, yum or what have you (as they are all rpm based) but I need something I can build tools around. I was going to go with DNF, Fedora new Dandified Yum Version but it pulls in SystemD and for the lite guys, there's better Init systems (uselessD). I could easily go with Yum, but I don't know how long the community is going to support it now with DNF being around. There's other options out there, we could even go with deb files etc.. I am going to look closer at Zypper and yast so far I am seeing Zypper pull in three major depends Boost, Libzyp and Augeas. I have packaged two out of three of those (Augeas and Boost) in time past. I'm just not sure about Yast and there front end.
If there's some awesome change in development with smart (ie. a decent front-end) or apt-rpm (just development in general) by all means let me know and I will look deeper into those.
Kind regards
Jeremiah