Overture, isnt that kappa? awesome, that would rock. and a rondo one would be cool too.
...And it could be you!!!!! No, not you, you! No you in the the blue shirt. No your friend. The people in, where is this TV... Russia? Africa? They all look the same to me... Forget it none of you can be a winner. Not untill i find out where this TV is... Austrailia?
Crosses are something like Forte Cross Rockman... In this case, Forte Cross has been equipped onto Rockman... Or on EXE 5 DS, Sol Cross Rockman - a Sol Cross equipped to Rockman (really, it's more like a Django one... But Sol is the official name.)... In other words, permanent programs that are installed into a Navi to give them the characteristics similar to that of a specific Navi - particularly renowned or prominent ones.
Soul Unisons would probably be a different concept, like an extra Hyper Mode. >_>
Or in place of Giga Fusion... I think Soul Unisons should be given to whoever managed to do the best aginst a boss, as well as between Navis who have a close relationship... Something like Giga Fusion, but with some modifications would work... Particularly that restriction that required the presence of both NAvis together.