Hi Razor, appreciate the effort and enjoy testing different spice mixes.
The only thing there that stands out to me is the tsp of salt. I personally like to measure salt separately, since it has a huge effect on the finished dish. I've settled on about 1/3 tsp of salt per restaurant-sized curry. A quarter tsp isn't enough, and I find half a teaspoon too much. (Note I also use MSG, which is a sodium of some sort, so I'm not sure how much that adds).
The rest of it looks OK to me.
I also wonder about (to a lesser degree than the salt) the methi powder, ginger powder, and garam masala. When I break down the ingredients of commercial curry powders, its often methi, asafoetida, cloves, bay leaf, etc. So I wonder if you add a lot of that separately (methi and garam), as well as a large proportion of curry powder (its tied for your #1 ingredient in the mix) I wonder if your mix is a little curry powder-ish.
Note that I have not tried it, but that would be my initial observation. No knock intended, I appreciate the experimentation and glad you enjoy the results.
-- Josh