Best standmounts with a 7" woofer/driver

Joseph Audio Pulsar Graphenes, only bookshelves I think would be a noticeable upgrade.....but the Alta Alyssas should be listened to if you have the opportunity

Wharfedale Elysian 2

($6995)

Treble:    3.5" (90mm) Air Motion Transformer
Midrange:    6.0" (150mm) coated fiberglass matrix cone
Bass:    8.5" (220mm) coated fiberglass matrix cone
Nominal Impedance:    4Ω (compatible 8Ω )
Crossover Frequency:    360Hz, 2.9kHz
Frequency Response:    35Hz ~ 22kHz (+/-3dB)
Sensitivity:    89dB (2.83V @1m)
Recommended Amplifier Power:    25 - 250W
Weight:    67.2lbs
Dimensions (HxWxD)    27.6" x 13.1" x 17.0"

I would like a bookshelf that can move some air. Big sound. I currently own Revival Atalante 3.They have a nice 7 inch driver. Just shopping for possible upgrades. My room is 14' X 12'

Not sure what specific upgrades you're looking for. If you're after more air movement, a bigger sound, or deeper bass, the Atalante 5 could be the best candidate, while still retaining the traits you like in the 3. The options might be limitless and people are shooting random darts here unless you specify what you're aiming for.

Reynaud Bliss Jubile'

https://hifiplus.com/articles/jmr-electroacoustique-bliss-jubile/

If you want a bookshelf speaker with bass, listen to the Generation 4 by Watkins Stereo.

https://www.watkinsaudio.com/shop

https://www.theabsolutesound.com/articles/watkins-stereo-generation-four-loudspeaker/