A small ship (Silhouette 4) can normally only mount a Light Tractor Beam with Tractor 2. That's a pretty weak Tractor level, so I'm curious what would happen if twin Light Tractor Beams were employed with Linked 1. On a hit, if two Advantages are spent to activate Linked, would it be reasonable for this to provide Linked 4 (or perhaps just +1 Tractor per Linked activation)?

Either of those seem acceptable to me. Tractor beams are kind of puny in this system.

Largely because tractor beams are largely used for one of two things.

Either for the moving of inert/unwieldly ships. In which case, having a tractor beam simply allows you to do that, even on a ship that wouldn't even be considered a target.

By a much larger, more powerful ship to restrain a smaller ship. The deathstar capturing the Falcon for example.

I wouldn't really expect it to be commonly used as a weapon, unless as a desperation measure. Though linking them up may make them more effective then their size suggests.