Well.. you cannot sub Tav where MoD is used without thinking...
Agreed, that for other fast gens like BHG, you can use Tav..
But MoD is different enough, that you might be making a bad sub.
Hence, if we are really using a MoD like BHG, how about we say BHG instead of MoD to make it more clear,
and reserve the use of MoD, where truly a MoD is needed?