You can mitigate monster HD to a certain extent by either removing them completely (a 2 HD lizard man becomes a 0 HD lizard man who then takes a class) or allowing a player to "convert" a Monster HD into a class level when they gain enough xp to gain level, but would not level because of LA.
They still have to contend with the LA that comes from innate abilities.
Doing this requres a bit of reverse engineering to remove their stat bumps, saves, feats and skill points gained from the monster HD, but it's worth it if you want to add in a few new races with a low LA aside from their monster HD.
They still have to contend with the LA that comes from innate abilities.
Doing this requres a bit of reverse engineering to remove their stat bumps, saves, feats and skill points gained from the monster HD, but it's worth it if you want to add in a few new races with a low LA aside from their monster HD.