MoP was the only expansion that I pretty much skipped too. Had nothing to do with panda’s or anything like that. I found the content boring, levelling in the zones were boring (Have always hated going to MoP zones, so avoided them as much as possible) and end-game, to me, was boring too (Though I didn’t do much).
I started at the start of Cata, and have been told by a lot of people that Cata was the best expansion for dungeon difficulty, as they were all difficult. I hated the water zone, so avoided it, but, I enjoyed questing in Uldum, Deepholme and Mount Hyjal.
Firelands is still considered one of the better raids out there, DS being another one. Plus, Cata was where all the zones changed (Hence why I can’t mention anything about before xD).
WoD had it’s problem’s obviously, but, the content we WERE given was great. Levelling was amazing, and levelling alts was even better when flying was brought in (Treasures and Objectives). Garrison’s weren’t really mandatory, you only needed to do the short intro questline to unlock them, then you could move on and do what you wanted. WoD also brought in the legendary ring, which was a fun little quest-chain (Never did the back leggo from MoP, so dunno about it much xD). The ONLY problem people had with WoD was the content drought.
MoP is literally the ONLY expansion where I left near the start of it and didn’t come back until the newer expansion hit. Legion was terrible at the start, so I left and came back with Nighthold/ToS, BFA I did the same thing, left when Cruicible came out and came back when Ny’alotha hit.
Shadowlands is the first expansion (apart from Cata when I first started) that I left mid-way through the first patch and came back for the second. The raid’s have been great in Shadowlands, especially this one. Most of the bosses are fun to do (Painsmith being my favorite at the moment).
So, I didn’t judge it by it’s cover, I judged it by it’s content, and found it to be lacking. The ONLY good thing that MoP brought out was Timeless Isle. I missed being able to do that when it was content, but, I enjoyed going back to it and experiencing it.