As someone who isn't well-versed in Battletech, I just assumed heat was part and parcel of the game, and that going heat-neutral meant (unless in cases of certain roles which dictate certain builds) you're probably not building your mech as powerfully as you could. Heat neutrality just sounds like a waste of the heat bar itself.
Besides, I like the idea of not firing everything you have every turn. It gives you good reason to not take those 30% shots. It's like Kenny Rogers said, "You gotta know when to cool'em, know when to shoot'em, know when to run away, know when to jump."
There is one really small but vocal group of players who insist they should be able to boat huge alpha energy weapons and run cool, and that BattleTech should always be about the alpha strike.
They've been around forever, and have been making the same complaints since forever even when PPCs were the be-all, end-all king of optimal play in BattleTech TT.
TT allowed these players the flexibility to build the cheesiest nonsense, and subsequent PC iterations of BattleTech have taken this away when the designers of those games realize during their design process that having a species of one-shot wunderweapons isn't good for a game. For some reason, the vocal minority thought HBS would be different.
I wish we had YouTube back in the early 90s, so people could've uploaded & preserved the kind of bullshit I'm talking about. Nobody would be able to say with a straight face that the game was
so well balanced with the original heat values if I were able to just post footage of Awesome tryhard players tabling their opponents while taking 0 damage.