Also perhaps of interest might be this discussion from the SSC subreddit awhile back where someone detailed their pro-Bigfoot case.
Serious question: would something originating adjacently from a separate Everett branch count?
(sillier-though-hopefully-not-counterproductive question: since your final statement especially would, I think, often seem to go without saying, its "needless" inclusion actually strikes me as probably-not-but-still-hypothetically-maybe worrisome -- surely you're not intending to imply that's the only recourse allowed for being denied one's winning lottery ticket? [or perhaps my own asking is needless since someone deciding to be a jerk and not wanting to pay could simply use such agreed-upon discretion to "fairly" declare themselves the winner anyways, in which case: sorry for the derail!])
Somewhat similar to you I've thought of the second group as "Vroomers", though Eliezer's talk of cursed bananas has amusingly brought "Sunnysiders" to mind for me as well.
I can't vouch for this personally and don't even recall the source (always a great way to start advice...), but I remember reading once that a pinch of sugar sublingually with a touch of salt might also help for quickly returning to sleep.
The "Borderline" icon currently being a balance is something I most naturally interpret as "balanced fairly", whereas a similar-ish alternative -- open hands gesturing up & down -- reads more like "iffy" to me and might better communicate the concept. Here's a simultaneously too complex and too crude mockup based on https://thenounproject.com/icon/hand-disinfection-3819834/ :
A similar idea to indicate that something might be kind of a toss-up (which at first blush strikes me as less good than palms balancing, yet maybe better than the icon already in use), would be some sort of flipping coin, e.g. something like https://thenounproject.com/icon/toss-a-coin-3819618/ sans hand. Or perhaps https://thenounproject.com/icon/coin-flipping-2307580/ including the hand.
Another idea could be a thumb sticking out sideways ala https://thenounproject.com/icon/thumb-horizontal-4154461/ , though somehow that reads to me as possibly more judgmental maybe.
Finally, I noticed these half-arrows pointing in opposite directions: https://thenounproject.com/icon/double-side-arrow-236719/ . I don't know if their abstract nature would make them feel less judge-y or if them sorta mirroring the left/right arrows we already use for voting would read to some as actually *more* unnecessarily judgemental.
I'm surprised to see a "Wrong" icon as a counterpart to "Verified" and not something like "Citation Needed / Requested" or something else that solicits information / evidence.
Using a plain heart to express empathy seems easier to confuse with "I love this" than seems ideal. Here are a few other options that seemed potentially appealing after looking through results at The Noun Project for "Empathy" and "Hug":
https://thenounproject.com/icon/take-care-4694299/
https://thenounproject.com/icon/hug-4400944/
https://thenounproject.com/icon/heartbeat-977219/
While not really answering your question, reading the description for the problem you're having brought this exploration / taxonomy of okay-ness to mind.