As I remember Xcom opening cinematic finish with Mutons retreat via teleportation...
Maybe we could add teleport feature in tactical battle. Something like we seen in "Flashback" where player have to throw "resiver" to destination location (or drop it to ground) and then can teleport to this location.
1) We can add some restriction that telepor is finish at end of turn (and before explosive activation) and freeze unit until end of turn.
2) New turn unit start on new location but go through reaction fire test.
3) Unit can teleport only to own "resiver" .
4) Only one unit teleport to tile (or any teleport to tile with other units kill teleporting once or both)