So committed, in fact, that modern WoW players are trying the beta and reporting what seem like bugs today but what were actually intended functionality 13 years ago. This became such a common occurrence that Blizzard publicly posted a list of known non-issues called the "WoW Classic 'Not a Bug' List." For example, hitboxes for the Tauren player race are much larger than those of other races. In a modern game, this would be seen as a serious balance issue (see: Apex Legends). But it's what vanilla WoW was like, so it has been faithfully reproduced.
Tyr's Hand (marked RED on the map) - One of the Scarlet Crusade's Bastions, the Tyr's Hand is located in the south-eastern part of the Eastern Plaguelands. Scarlet Crusade members that can be encountered there have a very good Loot Table. The main focus here will be the Scarlet Archmage (which is an Elite, so farming them solo might not be possible for some Classes). the Archmage drops a lot of Runecloth, ~14 Silver worth of Pocket Money on average, and most importantly, the Formula: Enchant Weapon - Crusader which is very valuable to all Enchanters and achieves really high prices on the Auction House. Mobs encountered in Tyr's Hand can be Pickpocketed, so this is a quite good spot for experienced Rogues. Recommended Level - 60 (some Classes might be required to find a Farming Partner and go in as a duo).
Whelgar's Excavation Site - This Dwarven excavation site was overrun by Raptors (Mottled Scythemaws and Mottled Razormaws). These reptiles are a great source of Medium Leather (you should have Skinning Profession if you want to farm here, as a very large portion of income that comes from this spot is acquired by Skinning Raptors). They also drop some Vendor Trash Items and Raptor Eggs (these are convenient, as a Cooking Recipe for them comes from a Quest that is located just above the Site) that can be used for Leveling up Cooking Skill. However, the best part about this spot is that both Raptor types present here drop level 19 Twink Gear (Feet of the Lynx, Sentry Cloak, Redbeard Crest, and Twisted Chanter's Staff) that will achieve astronomical prices at the later stages of the Game (drop rates are very low, so some RNG is involved, sadly). Recommended Level - 25+.