Tel can be built to be rather tough and annoying for the opponent. If they concentrate on him then no doubt the other elements of your squad will be punishing them for it.
Push The Limit, Gonk, Hull Upgrade and R5-P8 allow for some interesting mechanics. Store up as many shield tokens on Gonk early game before pushing into combat. When he's first destroyed and comes back with 2 hull points thanks to Hull Upgrade, you'll be able to regenerate the banked shields as well. If you have the points the Punishing One title is great, although expensive.