I know that the exact level of mod support is currently still to be determined. However, what about a player-accessible console, or at the very least a couple of cheat codes? Can we get those with Unity?
There's two reasons why it's really needed, and why I'm popping my forum cherry with this thread:
First, CRPGs are big messy things and I'm sure a lot of people who played BG2 got a lot of value out of CLUAConsole-ing their way out of glitches. (Bethesda-engine games, even more so.) It's a great fail-safe to have in place, and without it I'd probably never have completed DeArnise's Keep in my very first playthrough.
Secondly, well... the new trailers showed some of the spiders. There's a decent number of arachnophobic players out there, and God Mode-ing or teleporting your way past the ickies has generally been the most common way for them to deal with the issue when mods weren't available. This usually elicits disbelief from people without any phobias themselves, but check e.g. the Nexus for spider-removing mods and you'll see that yes, people do really have this problem and no, they really can't just shrug it off.
So... Can I haz CTRL-Y plz?