Hello,
As far as I understand, P-REC will stop functioning when TF2 switches to 64 bits. Some competitive players have preferred that plugin to the in-game demo system for a few reasons. We can also estimate that ETF2L's match report system depends on some features that only the plugin implements. With the recent release of the source code, and the impending doom of the plugin, we can make educated suggestions to improve the in-game demo system.