this is totally false. you maybe missremember that with classic. in classic you had frost mages with 4-5 different levels of frost bolt. in classic you had spam-shadowbolt-locks. in classic you had warriors only spaming sunder armor. in classic you had buff-only paladins. in TBC all classes had finalized rotations. i play since 2005 without interruptiin, i still have videos, internet too, of all classes. its wrong.
sorry, but you are completely wrong. check your recall or internet. its just plain false. you talk about vanilla, not TBC.
just out of my brain i have few examples:
- retri: pala was introduced as BE version and had around 3-5 buttons. a stagger mechanic to stack big crit hit of a finisher with seal, judgement and a debuff. had nearly the smallest rotation with 3-4 core keys and some buffs.
- tank pala: had around 6-8 rotational keys with 9-9-6-9 mechanic. judgement, seal, consec, and other stuff.
- resto drood: had rejuv, swiftmend, healing touch, regroth, lifebloom, tranq and dispell plus side stuff (cc etc).
- arms had MS, rend, sunder armor, whirlwind and other stuff
- bear had maul, swipe, charge, bloodthing, berserk, and other stuff
- lock had 3 dots, lifesteal, soulsteal, and other stuff.
most TBC rotations had around 4-7 core keys and 3-4 additional stuff. every classes bar was always full and most things most of the time was needed.
you can watch here:
https://m.youtube.com/playlist?list=PL3A612DAB321524FB
in short: you are utterly false. or your recall.