I know its really really quite early, but having a goal in mind is never a bad thing.
I haven't quite nailed everything down just yet, but here's what I have right now as my end goal for a team. I think its a nice balance of early-and later-ish pokemon and allows me to add a new team member about every couple of locations after Softwind:
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I have no idea how exactly I'm going to go about getting an Echoise, but a guy can dream I suppose!