Making Town Portal only bring certain units.

Is there a way to have a town portal type teleporting spell that allows you to specify what units are brought with the hero? I mean without making a triggered-by-hand simulation. The targets allowed section for SoTP refers only to where you can TP to. I guess the way that the scroll doesn't bring working peons and wards and stuff is hard-coded?

I think the easiest way is to just trigger it, just pick every unit that matches the condition in range of the caster and move it to the target point. (well add some SFX's and stuff) oh and be sure to clean up leaks.

Hmm... TP makes caster invulnerable... and double-clicking TPs also.