The fact of the matter is... the game could support hundreds of different skills. Every single little thing a character could do could be its own skill. Knowledge of monster traits could be their own skills rather than just done as part of skills like Religion, Nature, Arcana and the like that it currently does. Riding horses could go back to being its own skill rather than treated as a Tool or as part of Animal Handling. Pickpocketing could be split off from Sleight of Hand to be its own skill again. There's no end to the types of things that could be skills in D&D.
But at the end of the day... the question just becomes how much is gained by doing that for most people? Yes, for some players it would be a godsend to have 50 different skills and each one being able to be boosted one skill point at a time, rather than just by proficiency bonus. But for others that would be a massive waste of time or energy. So who's right? Who gets their way? Eventually each person will have to decide whether or not they think their desires will be the ones that WotC goes with... and if it turns out that they aren't... then they need to decide whether or not changing the rules for their own personal table will be the best way to get what they want.
I know I've changed the skill list for almost every single 5E campaign I have run-- adding, subtracting, and merging all manner of skills so as to be most appropriate for the style of the campaign-- and I will continue to do so even after 5E24 gets released.