i think the forbidden moves are fine. as long as we can articulate why this is.
Personally i think that for bidden moves are forbidden because they produce a narrow skill set and a less fun game over all. for example the shovel its like a rocket launcher in cod. They stop being useful in high level game play. If you rely on it too much you dig your own grave when you reach higher levels and have focused more on one thing to the detriment of others. In the shovel sure you learn how to generate lift but once you have it you don't know what to do with it besides putting them down out of the ring. while winning in cool and all. If the win feels unfair to the opponent and you do it often enough they will just leave. This is also part of the reason they are forbidden i think. Though i do think that if the move have been thought off but the person and not copied its a good thing as long as they don't stop there. Shows that they are heading in the right direction also if its a shovel they will be met with this or something like it.