I've been playing a lot of Shinobi though a lot of people say she is OP, I'm not entirely convinced, I feel as though if you're capable of parrying and dodging you can deal with one decently well as Shinobi can be punished when they mess up... Though that doesn't mean there isn't an issue with the Shinobi, and that is her 50/50 kick or GB moment... Personally I don't think 50/50s should exist in this game at all, it just becomes a guessing game then which is no fun. So, my solution to this would be simple, after Shinobi does her double dodge, unless she does a light, heavy or a kick there should be a recovery time before she can do a GB allowing the player to still go for the dodge and not just be 50/50'd to death.