Jono, as regards the 'comma' in 4 digit numbers, a big well done for spotting my endeavours, I wasn't sure if anyone noticed I altered them.
I like things to be consistent, it probably wouldn't surprise you to know that my day job many moons ago was Text Processing Supervisor. I decided that 4 figure numbers did not need the comma but those over 10,000 did🥰
I often tweak other things, such as putting a space between FT and the number, IMHO it all helps to create a neat and tidy Forum.
As regards your other comments,
1. Which main page do you mean, can you please post the URL. I've never seen "month" and "year", my shortcut links obviously take me to a different page.
2. The "side bar" etc is outside my remit, I leave all technical stuff to Ash. However, I've created a document in Word and will copy your comments there, in due course I'll send all comments received to Ash for his attention. I'll make a note of the crossword names you mention, thanks.