Dont.
They are fine.
I get killed by them as much as i do Gauss, or Lasers or PPC's
The list of Hard and Soft counters for LRM's is very long, and does not need revisiting.
The amount of damage is about spot on, and all weapons suck if they hit you in large numbers.
Mechs with large numbers of tubes are generally deficient in other areas, and thus can be countered by lighter mechs.
One thing i might add is that while LRM's are recharging, that the LRM firing mech be targetable by everyone for the purposes of counter battery fire.
Let the Dev's keep working on the game, rather than running around trying to rebalance the game for people whining online.