You better be

This guy seems like he could be pretty good if played right, but what exactly is played right?

ATM Han, RH looks like he's the best option, +18 for 50 damage is amazing for only 24 points:
Han, RH 35
Jariah Syn 24
Princess Leia, Senator 13
Lobot 27

Anybody else have any good Jariah Syn squads they're willing to share?

Ahh...Leia Senator....I'm thinking that's going to be one of the best ways to utilize Syn, as he's too weak to move out for a shot, and just be left there for the rest of the round. Really needs to have some form of mobility. So, either something like Leia Senator, or an ASP-7 Droid would be necessary I think. Fodder and Lightsaber Deflect will be his biggest problems though, since he has no Accurate, and only 1 shot per turn.

Here's a 100 point squad I tried with him that worked great for me:

Jariah Syn
Luke Skywalker, Hoth Pilot Unleashed
Lando Calrissian, Dashing Scoundrel
Princess Leia, Senator
Bothan Noble

Alternatively, you could rotate Luke for a Golan.