I have seen this idea on the new-old-forum too.
While I’m not really interested in Orcas neither from the piloting, nor from the killing side, I support the idea. Orca is a large ship, it should be able to fit a module that is limited to large ships.
I think if you have 2 Orcas already grappling each other and are mostly aligned, I’d say the time between the attacker appears on on grid and actually leaves warp would probably enough to initiate fleetwarp and get out before they could be targeted. Cov-ops tacklers would become necessary to catch them, which means more content. That’s a good thing right?
A higg orca is traveling at 15 m/s so you can stay fully for an extremely long time without really moving already. The difference between a webbed higg orca and a grappled higg orca is 4 m/s or so if the grappler is in optimal range.