As for specific things I'd add. Well for starters.
More humanized species': One of the things that Trek I always believed needed improvement on is the fact that all the species were defined by their cultural background. If I were to make more humanized aliens in Trek, they'd definitely stand out from their culture and actually feel like they are a part of the crew; rather than just being there.
More human personal problems: A very character driven show similar to TNG. There'd be episodes based around the characters and their problems. Yes, there'll be big problems too, but not as much.
More modern filmmaking techniques: Modern Camera work, modern designs, an overall more modern trek.
More humanized species': One of the things that Trek I always believed needed improvement on is the fact that all the species were defined by their cultural background. If I were to make more humanized aliens in Trek, they'd definitely stand out from their culture and actually feel like they are a part of the crew; rather than just being there.
More human personal problems: A very character driven show similar to TNG. There'd be episodes based around the characters and their problems. Yes, there'll be big problems too, but not as much.
More modern filmmaking techniques: Modern Camera work, modern designs, an overall more modern trek.