I actually had this happen with too many supports. We ended up getting crushed.
Keeper Of The Light is a very good support hero to learn, since everything about him is all support.
Yeah, I heard someone say that too. Which was weird since two of the "supports" were Sven and Necrolyte. Then our KotL switched to Drow at the last second. And we were crushed.
Necrolyte and Sven aren't very good supports, and both work better as carries. Generally when you have keep you don't want to have any more supports or your team is going to lack firepower since keep is all the support you need.
Even the horses are cut in half- Berserk steam id: trigunbox