TNG-era shows (or post TNG era shows) are not likely, because that side of the franchise produced ever-diminishing profit for Paramount. nuTrek gave the franchise profit and popularity... something the TNG movies failed to deliver.
IMO, any new Trek on the small screen will have to be set in the FAR future from TNG, such that no crossovers would be possible. This would necessitate new casting and characters not seen previously. The other choice is a nuTrek-based series. Either series would/should be animated. It would be more cost-effective.
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