You are correct. There are quite a few terms and other jargon that could be there. I may have to go on a "dictionary entry posting streak" to catch up.
That's a reason why I am glad there are places like this topic here on TiltForums. It serves as a place where people with good ideas can just post them, discuss them here, and don't have to wait for me to make posts to the "Hall of Fame".
Plus, since far more people visit TiltForums than my site, people are more likely to see this topic here first before noticing the "Main Page" on FWB.
I've also got some terms in the bullpen. Here are a few of them in no particular order:
Avatarred, Valid/Validation, Magna Drain, MagnaPass, Dead Money, Donator, Perfect (as a prefix), The Usher, The Arkanoid Drain / The Breakout Drain / The Inside-the-Park Home Run, Skillz, Juggling, Bunny Hop/Flipper Hop
Others can be found on one the alternate NPD areas:
NPD on reddit
NPD on Pinside