I was wondering, do you think we'll still need HMs in the next games? Up to this moment, it's apparent that the new region will be based on the Île-de-France, which is completely landlocked. That made me to think that HMs like Surf and Waterfall would be pretty useless. Cut could survive, as does Strenght, and Rock Smash could be reintroduced. However, without any big lake or sea to cross, Surf could become a TM, as does Waterfall. Those HMs have never been TMs before, and I wouldn't like them to change their positions, but it's a possibility.
We don't know much about the new games, but we can keep wondering about them, and I wonder what will happen to HMs. They could even disappear. TMs lasting infinitely just like HMs is a possible hint of their fusion.
TMs themselves, will most probably increase in number. I can see at least 100 TMs. What moves do you want to see as TMs?