I don't plan on adding anything else besides server player graphs and per day KD and connection time later. The stats are already being collected, just need a GUI.
Most of the stats it doesn't have that are in hlstats aren't very useful such as the ranking system, headshots, and killstreaks, all poor measures of TF2 skill. While I could probably add all those features, very few people use hlstats anyway and we would have to worry about spending more and more on the stats server. It is already using using a substantial portion of an SSD.
Hlstats will be shut down near the end of the month.