How good is wat tambor?

Arguably the best plug and play toon next to thrawn. He can make even terrible teams good with his tech and zeta..

I faced a mediocre Carth team last round of GAC with Wat included. He put the tech on Zaalbar that heals 5% health and protection every turn on him and I actually timed out with just Zaalbar remaining because I couldn't do enough damage to him. This was using a G11-12 Empire squad so it wasn't max or anything, but wow it made a difference.

I'm thinking at the very least Wat can make a mediocre team solid, and that's good enough in my book

Very Gud™

I've seen a g11-12 carth team with wat, take out a full g13 Nightsister team. Yeah.

Put him in with g13 bossk lead BH and you have an easy 60 banners against any NS.

I prefer him on offence personally

I like using him on offense too, so much control over the fight, that's fun.

Same with the Carth lead OR team, I timed out against them.