Great article!

While DoTA 2 heroes can be guessed based on their stats, those heroes seems to be having their stats changing based on the need of nerf (tuning) instead of their type.

Additional data that can be processed is the mana cost of those heroes abilities, intelligence heroes tend to have high mana cost, strength heroes tend to have high base damage, agility heroes tend to have high armor. With 7.07, there is also stats bonus such as status resistance, movement speed, and spell resistance bonus.