The m20 used to be very opressive against OH becouse of smoke zook and the potentail to double down with stuart. Which made it very hard for ostheer to deal with becouse pak wasnt cutting it against it. Now that the zook is gone i feel like the build time is a little bit too long. It is not a bad unit but it certainly could come out like 10-20 sec faster. One needs to be carefull though since 20 sec can mean a lot in the early game.
The other solution is to buff its utility by making the armored skirts free so you can use the ammo on mines. Possibly even give a ammo discount to the mines with vet
