http://cs617620.vk.me/v617620909/240d/qmS5DkVaZoY.jpg
Somebody superimpose GoseiKnight's face over Fluttershy's.

If saban had to make SPD how would be the plot ?

Probably similar to SPD minus the whole A-Squad thing.

When will Power Rangers Dino Charge return?

More than likely sometime near August or even September.

More of a general franchise/business question by why does Saban make such destructive deals with Nick? I know Nick is pretty much their only option for a network at this point, but I don't know why Nick keeps putting these franchise hurting 20 episode season deals on the table and Saban was okay with it.

Because as it stands 20-26 episodes is the industry standard now. For both hour long, and half hour shows. Some are even 13, but those are cable shows usually. Network shows are 20-26 a season. Once Upon a Time, Glee, 24, Lost, Big Bang Theory, ect. Power rangers is unique for a kids show because it needs 35-40 episodes to adapt well and tell a good story. That is hard to do in a single season, since in Japan, they don't have the 20-26 season limit like we seem to do. Nick is just playing to industry standards. Disney was more than easy to get away with the longer seasons because Disney is a very rich and powerful company. Back then, they could do, and no one cared. Also, they probably wanted to keep in line with the current sentai. Unlike now, where we are falling more and more behind every series.

Meanwhile, over here in Britain, with Six episodes a series I everything but Doctor Who and Sherlock...

To be fair, Nickelodeon's parent company, Viacom, isn't exactly poor. Their operating income is in the billions.

Aside from that, later seasons didn't. Clearly, with team ups they happened in the same universe. So why, then, in Ninja Storm, did Blue and Red not believe power rangers existed. If an evil force the year before in another part of the country was trying to destory the world, and helmet superheros stopped them, then there would be news coverage, and no doubt about power rangers existence.

Also, not every season had the rangers losing powers. If there was trouble across the country, then they should be able to get there fast and fight the monsters with their overpowered mega suits of death.

It just seems that not many seasons are connected nowadays. Heck in SuperMegaForce, the only connection we got was Casey and those past rangers. Samurai tried to connect RPM, and it made a good excuse for why RPM wasn't the end of the series, like disney made it to be.

I may be looking too far into this I say. I haven't watched much Sentai, so I don't know if they lose their powers, or what every time. I remember Kyoryuger did, I think Gobusters did, but I don't know. It will be interesting to see how Nininger and Kyroyuger team up, off topic I know.