Thanks for the quick response.
In order to do everything you suggest, I imagine it would have to be an incredibly complex and detailed program. It sounds like you would have elements of a first person RPGs AND turn-based strategy games, in addition to creating an open world environment. Sounds like quite a great deal to bite off, I would suggest maybe building the barbarian aspect first, and totally ignoring the potential to start your own side or the like.
Definitely going to be doing the barbarian aspect first. Starting with some ruins. Whats nice for the idea of sides is that the t-engine has a built-in factions system that can be utilized for this purpose.
For now, I am thinking of having only the commander act and other monsters act on AI, although this may change. I don't want this game to be micromanagement intensive.
I'm assuming this is mainly a single player RPG? Or, if it is multiplayer, the players wouldn't be aware of each other unless they happened to cross paths. I think it could work. It would basically be like any other RPG, with some unit management added I suppose. I'd certainly play a game like this.
This is definitely single-player, although the t-engine does have functionality for online character sheets and an in-game irc client. While multiplayer would be interesting, it has some complications.