To repeat: most enjoyable. But of course users always have complaints... (feedback?)
The best kind of users.

* if I conquer a barbarian start zone, weird things happen. Sometimes barbarians completely ignore it and spawn happily anyway, sometimes they reconquer it. Sometimes I can move units in and out, other times units get 'stuck'. When they're stuck, sometimes I can attack them (i.e. my own units - Roman vs. Roman). I assume there's no point to conquering these zones anyway...
You... what?

Well, have a phalera for finding the first major bug in the game. You shouldn't be able to enter a barbarian starting zone, never mind conquoring them. Seems I didn't test that part properly.
* can't find any way to get the event list window back after closing it without attacking someone
I know. It's on the "to be fixed" bug list. I'll post the list here in the forums.
* when someone is 'coming', I don't know where exactly their spawn area is; can't quite work this out from the data files either. What provinces make up the possible spawn zones? What is the significance of connection to barbarian areas?
Most of the barbarian armies spawn in "wilderness" zones; the existing empires (Carthage, Gauls, etc) spawn in their "home region". The specific spawn point can be read from the units.xml file (entry attribute), but I'll add this on wish list. It shouldn't be expected of the player to have to look through the data files to find this out.
* Not clear on when revolts can occur.
Revolts occur while a people is "active", which essentially corresponds to their historical activity periods. This is also detailed in the units.xml file ( startYear and endYear period). Adding some visual indicator of where to expect trouble would be easy.
(PS The list element on these boards doesn't seem to work very well...)
I know. Working on it.

Thanks for the feedback.