I find complaining about HurricaneGokaiOh spamming hilarious because it's not even 10 episodes yet. ShinkenGokaiOh got used for 14 eps OTOH.
That said, Gokaiger's weakest point is its mecha fights - even Goseiger has it beat in that department.
Well, as I have said before, Hurricane GokaiOh's problems are its design (which is rather ugly), and the unimaginative way of using CGI robots to finish off the MOTW. At least Shinken GokaiOh actually used a weapon to destroy the enemy, so it makes the combat seems more exciting and engaging.
I do wonder why Gokaiger's mech battle scenes are rather bored for the most part, even though they have so many different ways of finishing off their opponents, moreso than other sentai series. I guess it just feels like instead of staging a fight that goes back-and-forth between the giant monster and GokaiOh, the director chose to let the fight ends quickly and without suspense by the activation of one of the Ultimate Powers. I remember that back in Dekaranger and Magiranger, the mech fights always seemed to be much more exciting than Gokaiger have been.