R 707: I need a Homebrew Dragon progression for a mount/companion for a player in my group. Said Dragon should be good aligned, Big, or able to tweak it easy to make it big, and easy enough to insert into an on going game for the DM. And should progress on par with a fairly optimized Melee build that isn't focused on mounted combat, but might want to shift gears to that style once in awhile, and may change build course to encourage it.

Thanks. =)