1. yes ! the game is very competitive now
3. skill tokens are just like challenges, some are easier and some are really hard.. for example; "get this exact score on X file"
4. there are a LOT of customizations now, its really easy to understand if u do it carefully ---- you can make you game look simple but cool.
5. the top players play like robots now and people improve really fast (mostly newgens and teenagers)
also if u want some ffr terminology:
FC: Passed a file without missing any note
SDG: Passed a file with less than 10 goods but greater than 1
AAA: Passed a file with 0 goods, 0 averages, 0 miss and 0 boos
FC*: you did an FC (Full combo) but didn't beaten you non-FC score
and nothing more to add.

Welcome back!
For April Fools 2020 you could play the Sans boss fight from Undertale entirely within FFR by playing the Megalovania song:
https://www.youtube.com/watch?v=6R2LRfROKGk
For April Fools 2021 Velocity released a special version of the game that has all sorts of features that aren't in the main game, you can still download and play it from the older+special versions link at https://www.flashflashrevolution.com/download/versions.php .
In 2022, Jakads won a $1261.69 bounty by getting the first ever Death Piano AAA:
https://www.youtube.com/watch?v=wHpXUjDpX1U
And the events team has been really active lately and hosting all sorts of side events besides just the annual tournaments.