A player of mine was musing just yesterday about building a character who defended his allies by teleporting in front of them and carrying a large shield. Functionally, this character would be able to abort to block for an ally within the range of his teleport. While this functionality has unbalancing potential by allowing other players to offload some defensive stats and outsource all their blocking, I'm pretty curious about how to build this power.
The functionality is a ranged block, so we considered building this as deflection linked to teleport.
Alternatively, if the teleport has the position shift adder and is usable as a movement mode, the character could dive for cover with his teleport, stand up, but not be able to block because diving for cover is an attack action. He could take the attack though, and just build his shield as an OAF defense boost.
In the second case, could the character use a multiattack to dive, stand as zero phase, then block taking a -2 to OCV? Maybe also throw a -2 onto the dive attempt for good measure.