I agree we could use more than 1 dungeon that provides us with ToM, as running that 1 dungeon over and over is quite tedious.

There are other dungeons though at lvl50, albeit not giving you ToM but only ToP, they are quite fun, at least i think.
Then there is Bahamuts labyrinth. I havent researched the matter myself, but it is ingame currently, no ? correct me if i´m wrong on that one.

I´d like to see 4-5 dungeons giving us our ToM for diversity, and maybe more fun Notorious monsters.

As for myself, i am currently enjoying content. As i can´t play a lot due to all that other stuff life offers i do it at my own pace with friends.