Wine 11 rewrites how Linux runs Windows games at the kernel level, and the speed gains are massive
(www.xda-developers.com)
Come on. Since 1997 and Ps 7, every adjustment had its own alpha mask to paint where and how much that adjustment would take place in the frame. Affinity does this. Hell, Krita has done this for nearly 20 years.
Gimp 3 is a genuine improvement. But what you propose is the kind of delusional thinking seen in 'Gimp is better than Photoshop' advocacy videos on YouTube. The kind of advocacy that has ruined GIMP's reputation among people who actually use this software.
Your half baked solution does not do the job.