Heck they gave the samurai's a mega mode and original cockpit.
But that's not really a big investment, they needed one set and a few new costumes. They could easilly shoot cockpit footage for 5 episodes in a single day just with the second unit.
It's nice that they made changes, but it's probably the cheapest way to give the fans PR exclusive stuff in every episode. They're still able to use almost all sentai fight footage everytime they want to save a few bucks. A pretty smart move by the production team.