I think this OS is going to give the rebels the extra push they need during edge battles as the Hoth cycle heats up. If you manage to pull two of these during game setup, its perfect, you have a very nice setup to any edge battle as long as you have some speeders on the board. Assault on Echo Base and Battle for Hoth are going to make this set really great!

I know the rebel OS in search for Skywalker has no speeders in it, but I can't wait to add more Hoth Objectives to my Rebel deck.

These do stack, don't they?

It's the text I'm unclear on. Is Edge (1) a status (i.e. the Speeder counts for an exclusive Edge value of 1, with the second Hoth Ops just repeating that same status of 1) or should it really read Edge (+1) so that each Speeder contributes 2?

They do stack. See the most recent FAQ for handling multiple instances of a keyword ability.

When I have this objective in a 2 vs. 2 battle, must I have more Hoth objectives as my opponent or both opponents to gain edge(1)?

Opponent effects are modified in 2v2 based on the specific verbiage. 'Your opponent' lets you choose one opponent, so you would most likely choose the opponent with the fewest Hoth objectives.

 

"Some cards have language that specifies “an opponent,” “your opponent,” or “each opponent.” When interpreting this language, both “an opponent” and “your opponent” refer to a single opponent, chosen by the controller of the effect when the effect resolves. “Each opponent” refers to all players on the other team. If an effect affects multiple players, resolve that affect among those players in clockwise order, starting with the active player."