I would like to see this unit used more and I am not sure it has to be anything so drastic. The unit is described as a fast raiding bot, so let's give it stuff that makes raiding soft targets easier and less micro intensive than other means. I would:
* Give it radar, land scout radius or even somewhat larger
* Give it a harbie-like reclaim ability
Optionally (not necessarily all of these):
* Stealth
* Slight speed increase
* Slight cost reduction
That way your raid requires nothing more than throwing two to four of these in a transport and off you go. Dont need to find a scout and engys to go with it. A raid is way better when you dont leave tje reclaim there for your enemy.
I think this woukd take the Titan from never-used to seldom-used and it would not.raise any of the objections people usually have about buffing this unit. It would still be a crap mainline fighter, would still not be really anything like the harbie. It would be strong enough to deal.with a t1 pd or a handful.of lower tech units and would basically not need to be microed. It would be also a sort of 't3 land scout' which I think is a cool idea.