For Batman, I would just use Movement > Teleportation, but flavor it as grappling hook.
For Spiderman, a lot of what Sam already said. Actually, I would just take the Fly feat, but it is a cost of 3 for a reason, so I'm not sure I would drop it down to a 2. Still powerful even if it is limited flight.
You can get out of a lot of situations. However, I would suggest using the Boon Flight instead, as you can, at higher levels, have more movement, and it sounds like better flavor for spiderman really.
combine it with Boon Focus if you want to make sure it is more likely to succeed.