Enemy mid picked a melee hero? You can punish him with Huskar, Monkey King or Shadow Fiend.
If your team has a greedy carry, picking Templar Assassin or Sniper is not the best idea — look at active mids instead: Ember Spirit, Primal Beast, Queen of Pain, Pangolier.
Look at their supports and think: who will gank you, and where? Can they kill you at the runes?
You can win with a bad draft, but it will take twice as much effort.