I know that I have posted about this before, but I wanted to go ahead and bump this for anyone new and to provide some more info.
As you may already know, I have written a script that generates heatmaps based off of data collected about Sentries in TF2. You can read more about them specifically and view the heatmaps at that link. The reason I am bumping this is because I am opening up this to other communities. I think that the most effective way of generating data would be by using more than one data source. While we are kind of a big deal over at F7Lans, more data is always better.
If you are the community leader for a TF2 community, and you are currently running SourceMod, please contact me and let me know you are interested in participating.