I'm not sure if this is the right place to post this or not, having just joined the forum, but I wanted to share.
I just set up my first tf2 dedicated server and installed sourcemod. On other servers I've been on and had admin level access, one of the things that always frustrated me was the inability to easily set the next map the way you can change the current map, either immediately or by vote.
I looked and saw a lot of requests for this functionality, and a lot of 'work arounds' but nothing that seemed to be a true integration.
I took the most recent build (sourcemod-1.2.1-hg2676) and have added functionality for a new base command (sm_setnextmap which functions the same as sm_map) and a new base vote (sm_votenextmap which functions exactly the same as sm_votemap).
Attached is the source code with the following files: