I mean all the thingys in the base, like the comand centers

You mean like completely redesigning some aspects? Still built into the budget because they have to build the sets from scratch every year. They only get costumes & weapons from the Sentai production company and even then they still have to make their own Ranger suits.

I've noticed they don't get sentai suits until later through the series, like "Strange relations" in dino thunder trent was in the suit that nakadai mikoto used, shiney, no clasps (visible anyways)

Re: SWAT Transformation
 

Yes, I'm sure everyone noticed the morph to Swat Mode wasn't original footage but they've never changed such things if the power-up was from Sentai. Lights of Orion, Super Dino Mode, Triassic Ranger, Swat Mode, Legend Mode, Master Mode, Super Samurai Mode, Shark Attack Mode. All of those changes were Sentai transformations so that's really nothing new that they decided to keep them.