Previous to Generation V, the advantage of an HM over a TM was that it could be used multiple times. This all changed in Generation V when TMs could also be used indefinitely. Also, their use outside of battle has been lessened by a lot. In order to complete the game, Surf is the only one that needs to be used often. Cut is needed just once... Strength is only needed a few times... and the rest aren't needed at all (Fly is just a convenience).
In my opinion, HMs have become obsolete and should all be given TM status in the next generation. Either that, or you should be able to erase them without seeing the Move Deleter. Which would then make them exactly the same as TMs except for the name.
In my opinion, HMs have become obsolete and should all be given TM status in the next generation. Either that, or you should be able to erase them without seeing the Move Deleter. Which would then make them exactly the same as TMs except for the name.