Yeah, picking out spyteams is definitely going to be useful. But it's pretty common for spies to not work entirely together - bussing is very common, and they already know we're gonna be looking for spy teams.
I agree with Jimmmmm about Merlin+Percival. Last game, I was Percival, and I picked out Merlin (nkirbit) from Morgana (mail-mi) by about mission 1.4 because it was clear (to me) that nkirbit knew something about mail-mi, while mail-mi knew nothing about nkirbit. Here I think Percival's job is going to be MUCH harder.
Percival needs to try and look like Merlin ideally. Merlin getting assassinated is a sad way to lose, but Percival has a good chance of getting assassinated, if he plays well. It'll probably be hard to identify Merlin, but the sooner Percival can do it, the better.
Also Merlin needs to be very careful. Last game, all three spies had nkirbit pegged as Merlin, despite me doing what I thought was a decent job of covering for him. Merlin should be very careful about his reads - don't be correct all the time (unless you should WIFOMWIFOMWIFOM). Make mistakes, just like everyone else. But then throw down that clean proposal just as it's needed.
Us generic Resistance members (which is my claim, just like it always is - except when I need to be either Percival or Merlin, in which case, I'm one of those) need to be careful as well - it's good if you can cover for Merlin as well, but in doing so you can often accidentally make it obvious you aren't him. Also, remember that there are people in this game with more knowledge than you who (Merlin especially), so don't think that just because someone knows more than you they're automatically scum. Merlin looks as much like a spy as the spies do, by certain measures.
Now that basic role advice is out of the way, it's mission 1. I have the hammer. Yay! Mission 1.1, Tables+Chairs, furniture unite. Who could possibly say no?