From what I am hearing from those that did see the last Chapter, I can see openings for another series in the future. If what I read is correct and what I can piece together from the short trailer goes with what I know of the original series runs in the 1970s and 80s, than I see how they can get to the main plot and some of the subplot elements in a second and even third series remakes. I can even see them having a massive opening ot retell the three movies shown during those times that were not redone versions of the TV series.
A lot depends on what they would do with Gamilas after Yamato leaves and the fate of Dessler. He quite honestly is their most popular villain...even when he's a good guy. While killing him off is a reasonable thing to do, an opening for his return would suit the show and provide a way to get to his own powerful story arc (redemption).