Coll… 
You know that @MACHIN3 produces many addons.
Besides, at the moment, I think he’s very busy updating his DecalMachine addon (Version 2.0), as much by the code as by all the help videos it provides.
Sending by Mail allows him more easily to structure his work and to answer all requests with a good overview . . . . and incidentally check that the requests are justified by the people who have the right . …
Moreover, in your post, you don’t complain about the addon that doesn’t work … but rather you ask for an improvement / change, which I repeat will be put or not in his To Do List.
EDIT:
To follow the evolution of MeshMachine, there is this thread:
MeshMachine