Most formats don't get that kind of support, specially right away, for BH and stabmon is there and was easy to implement, but even simple stuff isnt usually available, Alphabet Cup has been a format for years, and it doesn't have that kind of help, so people need to look up the moves they want, but searching by name is a lot easier anyway.
We have more than enough variants of gaining movepool, outside of sketch, conv, stab and bh, there is also Inheritance, Alphabet Cup, Cross Evolution and Force of the Fallen, some just change legalities, some come with restrictions on how you get them, some come with a few more mechanics, I think something really impressive would be needed for me to want to add another format to the category, and "you gain access to x moves" isn't distinct enough from what we have.
The list of moves you gain access to may impact what kind of sets you would be using, but it doesn't change the appeal of the format, as at its core is still not that different from the others when you look at them from the outside.
My apologies. I wasn't aware that the teambuilder feature wasn't universal. Nevertheless, I will still argue that for a player who's played one or two pokemon games before, they should have a rough idea of the best TMs since they would have shed it in their playthrough. I would say most people know that tbolt, ice beam, uturn, volt switch, scald and a bunch of other common moves are TMs. It's not important to know that Flatter or Dragon Cheer exists since you'll hardly ever use them.
As for your second point regarding, I'll definitely take this feedback to heart. I will come up and implement an additional mechanic which will increase the appeal and uniqueness for this OM. It may take a while however. In the meantime, would you be so kind as to provide some potential examples of how this OM idea can be developed further? I would appreciate your ideas and experience regarding the conception of OM ideas. I like to take inspiration wherever I can.