Interesting idea flyboymb - and it probably deserves a thread of it's own as well so more people will see & comment on it. Essentially you're talking about a kind of reserves mechanic, with the ability to arrive from a pre-selected board edge. Something like that would be pretty cool in Epic or as cinematic play scenario at least.
Hyperdrive capabilities are something thegame hasn'treally touched on at all, but there's been some discussion on the boards about how it could be done. One of my favourites was for multi-player, multi-table matches, where you had three seperate gaming tables and the ability to move between them. Your idea sounds good in two player games though, and shouldn't be too difficult to implement - I could imagine something along the lines of "up to a quarter of your squad value may be kept in reserve, these ships must be hyperspace capable" or something similar. Give it a try and let us know how you get on!