Personally, I think any other behavior would be preferable. Teleporting units moving at group speed, unable to shoot while moving and with some amount of paralysis when stopping depending on how far/fast they were moving seems great to me. Hopping at intervals dependent upon group speed would work fine, too (and would perhaps be easier to implement). Even making them sit where they had been until the group reaches its target and then teleporting over would be an improvement, though certainly not without its problems. At least then, these ships would jump to their death the moment you accidentally ordered them somewhere. There are things that are less micro-intensive that have been automated in the past, but this one still sticks out like a sore thumb.