I think it would be nice to have a feature allowing to get rid of WDT log on serial port, since I did not found any documented anywhere.
Personally I use hardware serial port to handle other hardware connected to it, and got confused about that random garbage data sent right after start-up. I figured it out it is a WDT log sent during strartup at 74400 bad rate (ets Jan 8 2013,rst cause:2, boot mode:(3,6) load 0x4010f000, len 1264, room 16 tail 0 chksum 0x42 csum 0x42)
It would be really great if that log (and further messages if WDT causes a reboot) could be disabled, as sending such messages to devices attached to serial port sends wrong commands there.
I think it also can have an option to have WDT log On, Off and Dev mode (for example messages are normally Off, but it some pin is tied HIGH - log is shown).
Thanks.