"perfect" ? It's the same sort of answer that people say here on war2. If you look it from outside with an objective perspective then you see what's the problem.
SC1 is 22 years old, I never ever saw scouts or ghosts or nuclear bombs usage. What's the last time you saw marine firebat medics being used professionally vs protoss ? vs terran ? I used to play against some amateur plus professionals and had several years of experience around this. What's the last time you saw massive ghosts usage vs protoss or terran ? Source ? It doesn't work for videos from 2001 or extremally picky situations just for show. I mean on regular daily gameplays...
By the way I hope you can give it a try to DAIFE or DIE, good luck & have fun !
Scouts are sometimes used in PvT to rush Terrans in "island" maps. Firebats sometimes in TvZ vs mass Zerglings. Nuclear Bombs I saw only once, that's true, but it was a good combo with EMP vs Protoss buildings. All of these are very rare cases, but still happens in pro gamers matches.
With all due respect, in lower skill level anything can be used from the game... People in war2 could say stuff like invicibility or raise of the dead spells work in war2 but probably we're are talking from very slow level speed people because when we're talking about slow macro mechanics then anything can be bring up to the table and work because reactions are slower even if the spells are not efficient for high level people.
With respect to SC1, Scout is a unit that I never ever saw in around 17 years being used against anything in high level games, not even amateur level. Those must be from very casual level people. Firebats is more likely a unit that could be seen in terran vs zerg but some specific situations by professionals to deal with dark swarm spell from defilers but that's the very only case along with some 10 marine + 2 medics timing where you can add up 2 firebats in case of massive zerglings, but again those are very specific situations and not in regular high level games.
This is like the thing this guy szwagier mentioned about from invisibility with sea units. You may have seen this thing happening once or a very few times in several years, that doesn't make it either useful for regular usage or even worse, for high level people. The same for sc1 units.
Just to add up, which was the last time you saw corsairs being used vs terran ? Or queens with ensnare against any race ? or broodlings ? Infested command center + infested marines ? Or Dark archons against any race ?
SC1 isn't remotely to ever be considered perfect at game balance from my opinion, but the people really like it because on how hard was to mechanically play with the AI and units along with micro. This could be addressed up as well on this game with troll or archers as well. As long as people want several changes to the units as well...
I really encourage again to just nerf bloodlust as soon as possible so then we could all see crazy strategies never ever could have been seen.