I'm sitting here thinking who could be the next opponent for Bobby Knuckles in the future, but when I go through the list I realize:
1) Chris Weidman moved to LHW
2) Jacare moved up LHW
3) Santos moved up to LHW
4) Rockhold moved up to LHW
5) Bisping retired
6) Machida left the UFC
7) Mousasi left the UFC
8) Nick Diaz is M.I.A
9) Anderson Silva is not getting any younger
10) Not another Whittaker vs Romero rematch
11) Is Tim Boetsch still active?
The MW division seems kinda empty, no?
I look at it a bit differently than you. Imo it's still a stacked division .
1. 2.3 and 4. All chased out of the middleweight division , unable to put together any meaningful wins. Yet all will be highly ranked no in lhw. Hell 2 former mw's have been Jones last opponents.
Those first 4 . Despite having recognizable names. Chris last win 2017. Souza. Last win 2018. Thiago. Last mw win . 2018. Rockhold 2017 . All four terrible at middleweight for close to two years. Or literally haven't fought at mw.
6, 7 and 8. Once again years ago with either left the ufc or haven't fought for even longer.
9. 10, 11.. somehow you have put the only 2 active middleweights here..... Whittaker and Romero as number 10....
The current middleweight era is
1. Israel. - undefeated champion . 18-0. 14 kos.
2. Costa -undefeated challenge. 13-0 . 12 kos
3. Romero. Who destroyed Chris. Your number1
4. Rob Whittaker.
5. Gas who's has defeated Souza and Bisping. 2 in your 10.
6. Cannonier since dropping down . Looks to be a monster.
Considering that top 5 is currently active. It's still a top division imo