I didn't see you mention these authors, but maybe because your cutoff date looks to be around 1989:
- Wild Seed- Octavia E Butler
- The Left Hand of Darkness- Ursula K LeGuin
- Dhalgren- Samuel Delaney
- Book of the New Sun- Gene Wolfe
- A Scanner Darkly- Philip K Dick
- Cat's Cradle- Kurt Vonnegut
Not exactly always considered sci fi, but maybe sci fi adjacent:
- The Terror- Dan Simmons, author of Hyperion, seems to be free of his politics
- The Yiddish Policemen's Union- Michael Chabon
- Gravity's Rainbow- Thomas Pynchon
- Fictions- Jorge Luis Borges
- Machine of Death- collection of short stories from various authors
- Infinite Jest- David Foster Wallace
It's a good feature, and probably makes sense to default to on. But I know I'll find it more distracting than useful, so I'll turn it off.
Large tooltips on mouseover are usually distracting. Facicons, text, and additional windows do enough to remind me what my tabs are.
New features often aren't helpful to each and every user, but as long as I can turn off the ones that are actively unhelpful to me, I'm perfectly happy to see them.