In away TNG did this in season 3. TNG in season 1 and season 2 compared to later seasons are almost completely different shows. IMO despite some flaws such as the lack of conflict and lack of humor this change worked pretty well for season 3 and 4. Maybe even season 5 to a extent but at this point shouldn't TNG have made yet another shift in formula to keep things fresh? Perhaps a story arc or a new character. RO was a good addition but she wasn't a series regular. Also perhaps some changes in the exsting characters. I think a Riker/Troi romance would have worked. I also think it would have been intresting if Worf wasn't allowed back into starfleet after leaving during the Klingon civil war but still gets to serve aboard the ship as a exchange officer. Perhaps a new ongoing alien threat would have been nice as well.
Jason
Jason

I would loved to have had more variety, more of a mix of the episodic format and some small story arcs here and there. Like a more joined and cohesive storyline to the kidnapping of Geordi by Romulans, leading up to the events in Redemption and Unification. That was a great set of episodes. Also the inital discovery of Romulans at Golordian Core in The Enemy, tie in the events in the defector, as well as face of the enemy. tie all those episodes together, and it would have been a great multi episode arc.