Flash grenades should be reduced to 1 or 2 per life. Mines need to be cut down to 1 or 2 of them as well. People who go in as a group and spam place mines completely ruin any game they are in for anyone but themselves. Sometimes it's fun as a novelty, first or 2nd death it's whatever but after a while it is just so awful to deal with.
Think about CSGO, they allow you 1 flash per life, and even then you just get blinded by your trash moron teammates that thinks they gatta buy flash nade and throw it first 15 seconds of every round
Remove flash grenades, remove mines, or limit them to an extreme.