That's what I talking about. When I thought about it I considered for myself: "allright, everything sounds like it is good ability. But nobody use it, so what's wrong?".
I think, problem is that efforts and time, which you spend on puting flaremines doesn't worth it. USSR is full of more easier to use sight ability - from light-rounds to recon planes. Keeping area under control with mines requiers from you too much micro and time and nobody wants to do that, even if it can be helpful.
So, it should be either automatic ability (for to make using of that not such troubling for players) or there should be another ability.
I'd leave it as it's now, since it can kill something so you need to take some time to place them. There should be a maximum to kill of like 2 models, since it can wipe all units when you pop them out of the building, which is just plain stupid.