Currently, I have the following books on my wish list that I am thinking about buying.
Salvation by Peter Hamilton. I have read everything he has published except his short stories and love them so this is next on my to-read list.
Soon I Will Be Invincible by Austin Grossman. Seems kinda cool.
Seven Deadly Wonders by Matthew Reilly. It seems like a book in a similar vein as Jurassic Park, Dan Brown, Clive Cussler type stuff.
Pernasi By Susanna Clarke. I read her first book nearly 20 years ago and thought it was good. I really like creative sci-fi stuff. I am re-reading the Ninefox Gambit series again currently so this seems right up my alley.
Brandon Sanderson Way of Kings Book 3. Yeah, I probably need to start with Book 1 again and catch up. Has anyone read his Secret Books yet?
Only one from your list I have read is Piranesi, but I just had to say I really enjoyed it. I'm a big fan of the genre so it was admittedly right up my street.
Some titles from my 'Short' TBR list include
The Tusks of Extinction by Ray Nayler after really enjoying The Mountain in the Sea.
The Long Mars by Terry Pratchett and Stephen Baxter (#3 in the Long Earth Series).
In terms of waiting I only have a couple
Doors of Stone by Patrick Rothfuss... But by now I should probably reread the first two once it is actually out.
The Martian Contingency by Mary Robinette Kowal (#4 in the Lady Astronaut series).
Edit: removing a spoiler that didn't get redacted properly.