Glitch Techs would be feasible, especially since there are several episodes that were already worked on. Why not actually finish that work and make some money out of it instead of letting the assets go to waste?
Stretch Armstrong was done years ago and I don't see either side wanting to do more. Netflix rarely renews cartoons unless they're adult-oriented ones and Hasbro is too busy depending on Transformers and MLP. I don't think the toys did well either. It sucks, though, since it definitely had more stories to tell.