I wouldn't base it on Reserves so much as consider it an inclusion. Teleportation is a fairly powerful gift. It'd probably come in two versions - one (for fewer points) allowing for Reserve inserts and for escapes from the map without going "off the map", and one allowing for teleporations from one part of the map to the other (more points). I'd use Supernatural Presence as a starting point, although obviously that's applied on a different point scale. However, the rules seem to match up.
As for orders, I'd probably have a special "apport" order. Thus, a troop has to prepare for teleportation (and if they fail to teleport, they sit there looking like jerks for a round). Forces that gain VPs from Capture would gain a serious advantage from this, so I need to make sure that the TA is appropriately costed and limited. It would be expensive.