That'd be cool ,but I want something like Decade.
If anything I'd like a serious series that parallels the 80's and late 70's alterations of the sentai franchise .
The theme doesn't matter much but try to ground it a little bit, perhaps even reboot it. The series needs to stop going downhill in quality, so my first suggestion is to cut all the mechs except the primary mech (Unless its just one more that actually matters to the plot ) even if you have to drag Bandai kicking and screaming. Second, cut the CG and use conventional effects ,that or use it minimally. The mech CGI is very unnecessary because looking at the older sentai, they did just fine and even better with their puppetry effects. The only way you can justify it is for mech scenes that would be virtually impossible to do effectively/safely by suit or puppetry. Finally , get better writers. If you cut the excessive mechs than you's have more than enough to pay for better wirters , even get manga-ka or film writers from America to author a sentai. Toriyama or the author of Kenshin would be a godsend .