Hey guys. I can probably add whatever you mean by "multiple repos" to Zendo, if you want to go with it in Alcoholix. Conflicts is already implemented in Zendo, at least nominally, but it's mostly useless because there aren't any slackware repos that actually have conflicts data in them.
I got back from university for the summer a little while ago, so besides work I should have some free time to implement whatever you need. Also, if you decide to do something like Shador said with a since install CD that can install a "Core" or a "Default" version, then maybe something CLI in core and a GUI application in default, wouldn't that be about right?