Like how everything was kinda same-y? The show got a little boring the last couple seasons because they did nothing different.
I posted a thread about how they considered replacing Wil Riker with Tom Riker, which would have been a bit of a shakeup, despite keeping the same actor. It would have given the show a new dynamic and probably some good conflict between characters.
Tom would have been bitter, while the others would have resented him for surviving while "their" Riker didn't.
Other than Wesley leaving in S4 and Ro coming in then out, then in then going Maquis, there was very little change of any kind.
Same-y due to running out of things to do with the then-status quo or because the previous format had been worn out so badly they had to fling stuff at the wall to see what stuck to it? "The Big Bang Theory" had 3 if not 4 seasons of largely the same format before it started doing format shake-ups.
TNG had what could be seen as being up to six formats due to a disparate feel between them:
* early season 1
* late season 1
* season 2 (which does build on late-season 1)
* season 3-4 (which does build on mid-season 2 onward and is arguably the longest natural flowing streak)
* season 5-6 (the biggest format change of the bunch, and latter-season 4 does start to show a possible winding down)
* season 7 (which blends in a bit of season 2 but enough that it doesn't feel like a completely worn out extension of seasons 5-6)
Until season 5, these tweaks worked in favor of the show. And to be fair, season 5 feels more original and to an extent still works in favor of the show (despite all the variables and changes) - season 7 is where the petering out and rehash really start to settle in, even if not consistently so.
TNG also had quite a few shake-ups during its run, and it's amazing how the show got to where it was by season 3. Those coming in knew what worked and what didn't and didn't throw out the baby with the bathwater.
And I forgot to mention, season 4 also adds in its share of callbacks and rehashes (Minuet, Yar ,etc) - as well as sewing seeds for future seasons and spinoffs (Cardassians, which come close to feeling like the TV trope "Cousin Oliver syndrome" but doesn't quite meet it - thankfully.

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Some events would be better with more impact, like Picard should have had one eye and one arm after BOBW. And he should flip out whenever a room has 5 lights for the rest of the series.
But I'm not sure I'd want Riker to leave. The poker scene in all good things doesnt work if it's a bunch of new characters because they change things.
Yup and totally agreed, Picard's egg whisk attachment and laser cat toy headgear could if not should have been permanent. That way, Stewart and Dorn could sit next to each other for one and a half hours each day and share stories about having all the make-up and costuming put on.
