this thread is oooooold as hell, but..
there it goes pan...
some things you said... i can't really agree:
"ghouls and fiends w/o DK are just shit"
--> man, try DL with sleep rush, or CL with beetles and fiends for creep - completely strong.
"Heros throw off balance, but other factors effect it. One thing is collision size. Fiends are fat, refering to the description an undead player gave them. reason why wyverns do so good, is wyverns have no collision size, allowing them to all get to a unit to focus quickly. More often than not, i have seen replays, where games have been decided becasue a hero falls in battle."
---> Fiends ARE fat for a reason, and the reason is *shiny eyes* - they must be harder to micro. Wyverns DO have a collision size, and AIR units spread automatically when they get too near.
There's not much sense in leaving a battle when you lose a hero... since you should have 2 or on rare situations, 3. And in the game start, it is kinda hard to lose a hero, unless you're noob... or got sleep/entagle/bolt/hex surrounded...
and if you're being focused by wyvs, you got a big advantage. hero armor takes less dmg from piercing attacks, just micro your hero out, and take wyvs 1 by one.
there are 34567890 thing i don't agree, but i'm lazy now and my time here at work is up =)