- I have no problem with Thieves' Cant if there are other classes which can be used to represent my characters.
- I don't believe that WotC is planning to create other classes; I believe they intend for the Rogue class to be used for every "Sneaky" character.
- I am highly limited in what kind of characters I can play if every single one of them is required to have a thorough knowledge of the criminal underworld.
- I don't think that Thieves' Cant should be a required ability for every "Sneaky" character because it acts as a limiter for what I'm allowed to play.
I hope this makes my concerns clear. In theory, I have no issue with the ability. However, in reality, I have an issue with Thieves' Cant. I'll repeat my questions; why are you confidant they WotC will change their design policy and release a large number of base classes, instead of relying on customizable backgrounds and a limited number of base classes? If WotC does not plan on releasing classes like the "Assassin", "Trapsmith", "Spy", etc, do you agree that Thieves' Cant should be a background?
EDIT - A third question;
Why do you think that the things which make individuals distinct from each other should be different base classes, instead of different backgrounds? (which is what I'm advocating for, on the basis that it fits the current design)