I am sorry if I get this wrong....but you can place multiple things to come out of 'named location'. Like one minute you could have zerglings coming out of 'location 5' and then 2 minutes later have hydras come out of 'location 5'. Its in the matter of triggers for that one. I have messed around with quite a few games and found out interesting things. You should also be able to do this with the default editor. I have done it myself for a Blue Gender Defence/Attack I made some time ago. No one ever plays it so I deleted it.
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory