Dota 2 is based off Warcraft 3 which is an RTS. Also they have custom games that are RTS like in nature which is why I compared the two games.
The only issue with a reconnect feature in COH is that alot can happen in 30 seconds. They would have to make improvements to the AI as well because it is beyond useless.
The same Warcraft 3 that did not allowed reconnects in ranked games?