LOL the TBC thing came about when people approached the devs during an AMA about this Classic+ nonsense. TBC was their response instead. They don’t want to have to take the time/resources and man hours it would take to put out content for Classic in the old vanilla style. It’s too much of a gamble and may do more harm than good regarding the player base. TBC being put on the table is what started all of that discussion
Here’s the link TBC is on the table!