Dude, hate to burst your bubble, but you should just let this idea go. Nothing against you, but even if you did manage to get into contact with Mr. Saban himself the idea simply wouldn't be picked up (and that's even if shooting for Samurai was still going on).
It's not a case of anyone disliking the idea, there's just no point to what you're suggesting. It'd be extremely expensive (for reasons already mentioned by others), impractical, and whatever end result we'd have simply wouldn't be worth it. The main viewer-base wouldn't get it, the hardcore fans of Shinkenger would be disappointed by a presumably failed cameo, and there'd be little to be done with it for all the expenses it'd generate.
Plus, if Saban wanted a cameo from Shinkenger, we'd probably know and have it already. So stop persisting with the idea, it's almost a bit sad.