You can play with vanilla or tbc rn on servers and as somebody who has high lvl characters I will tell you its not as great as it was. It was meh I've nothing better to do suspect Ill just stick to the entertaining or exciting. Part of what made those games so amazing was exploration and the puzzle which came together. Without exploration and all that puzzle it feels an obsolete crippled version of retail and the social element of WoW Classic suffers greatly from it.

I am frankly in favor of some changes, cause the buy wow classic gold

 problems need to be fixed. Class restrictions on certain loot needs to be in for you, because priests and mages don't desire Ironfoe and Dragon's Call, respectively. Because some loot was intended for builds of a few classes, and which makes the talent better is needed as well. Old Scholomance had a equipment set you could find that was intended for paladin tanks, as the gear had endurance, defense, and mp5, along with also the bonuses were additional stamina, defense and mp5.

The private upgrades along with the wow private server gold

 thing comparison should remain. These do not affect the feel of WoW Classic if turned off. On the contrary, these improvements are going to be a favorable for players that are used to those in retail and combined much later and that did not play with Vanilla.