We're going to need support from you guys during EA for sure, and really from the start. There are all sorts of models that you guys have been running on things like this, and there's nothing like crowdsourcing in order to get something like this really tuned.
In the very earliest EA versions, what we'll likely do is slap some vaguely-maybe-okay numbers in there, while we focus on mechanics. Players in those rounds can probably then hash out some of the balance bits, while we focus on the things that players can't.
Not that we won't be paying any attention to balance, but there's a lot to do and it's hard to balance when you don't have as much time to really sit down and play. In the early early days, that will likely be the case for us, just so we can get to as full a working model as quickly as possible.