V.6.3.1 running on my RPi 3B, all new listed features visable and operational, no unwanted by-products noted to date.
I was struggling today with an issue on V.6.3 where the kitz webserver interface would not display Stats or Telnet data even though these were selected on the webserver setup page, all other displays data was visable, the event log displayed "not all webserver data available" (or text to that effect) at every sample attempt.
This issue has been cured by installing the new program revision whether coincidentally or otherwise !
I also had a previous issue with the kitz webserver interface not displaying any data, found this was due to having previously added a "snapshots" folder to /home/pi/.dslstats, configured with the "snapshots directory" option, your inclusion of the option to save "webserver files" to an area of choice should eliminate this possibility in future.
Many thanks for your continuing development work with DSLStats, very much appreciated.