2 each and you have a squad wipe for 60 muni, I say it a good deal.
No, first model triggers first mine which triggers second mine with its explosion.
Whole squad may be wiped only if it walks in a perfect line in parallel to line of your two mines.
If they don't (e.g. approaching to your mines at some angle) it will take down 2 models most of the time, just like 1 mine would do.
Yes, we had update where they introduced limit on how many models can be killed by a mine, but occassions of full squad wipe were quite rare, at least from my experience. They fixed it because it created unpleasant experience if you are on recieving end, especially if you count in how this game values unit preservation. People tend to remember such moments.
As I posted before I would easily trade Ostheer mine for shcu mines.
IMO players lay mines mostly to get enemy vehicles, not infantry. T-70 do lot of pressure and costs 70 fuel, so it can't be replaced quickly, so wiping T-70 with teller is better than wiping grens with 2 sov mines (even if you are THAT lucky to actually wipe them).
I would easily trade sov mine for teller just because of that reason.
In a game that is focused so much on unit preservation I'd remove all no-brainer click-and-wipe abilities (except maybe ones that come in latest stage of game). In fact they already did a good job on it:
- precise shot on sov mortars, ML-20, B-4, Katy
- old demos
- nerfing Ele/JT damage
- generalist mine model kill count cap
- stun shots