I've been really enjoying and playing Imperial Assault Skirmish and I was wondering if there's been any talk about doing that for Descent (Yes I know Runewars is coming out, and I'll be buying that as well), and if not, what do people think of doing a community built version?

Go for it! Besides custom classes, we're really lacking in custom content. Maybe form a development or test group. I haven't played skirmish, but was thinking of the viability of it when I heard about it for the first time.

I've been really enjoying and playing Imperial Assault Skirmish and I was wondering if there's been any talk about doing that for Descent (Yes I know Runewars is coming out, and I'll be buying that as well), and if not, what do people think of doing a community built version?

Yes, there was a topic time ago where this mode was discussed named Unofficial Skirmish Mode Rules Brainstorming posted by Bayushiseni.

Now that I'm reading it again, I just realized I didn't answer to a question Cursain asked me hehehe

I, like you, really like the Skrimish version of SW:IA. In fact, that was what made me join a play group of X-wing and SW:IA in my local store nowadays.

Anyway, in that topic I posted what are the things I have developed and discovered. I left that project behind because my friend couldn't test it with me anymore. However, looking to other mechanichs and due to the recent announce of Rune Wars, I returned to develop this variant. Then, I discovered that if, like you, I was going to buy Rune Wars, I could create a new game from those two in some kind of Skrimish Version. It would be a new game with some mechanichs of Descent, some from Rune Wars, some of SW:IA Skrimish and even the squad-building system from X-wing. I can tell you more if you want, but I think it is too diferent from SW:IA Skrimish that it might not be what you are looking for

Sure, I'm interested

I was just wondering if a Skirmish mode involving monsters wouldn't make figures or gear dealing conditions OP, since monsters have no attributes. I haven't dug into this type of thing at all and I haven't read people's suggestions about it either (I´m not that interested tbh) but that's the kind of thing that would be a showstopper in my mind unless you mod things a lot. Because I´d be fielding Medusae all day long otherwise.