Many clients that I consult with have continued to use Web App Builder and legacy apps, even at ArcGIS Enterprise 11.1 because - as they say - simple widgets/functions were not available in the released Experience Builder embedded inside 11.1.
Other clients have adopted the use of the Developer Edition of Experience Builder, which has benefits but requires workarounds for admins and additional authentication steps for users.
At the 2024 Dev Summit it was suggested the Living Atlas content would be 'refreshable' from within the Enterprise Portal, and this was well received. That comment made me think that it would be ideal if the Web Map and Experience Builder components could also be updated periodically via patching or similar activity.
It's probably not appropriate for the Short-Term Support Releases, but for the Long Term releases an update of the embedded Experience Builder would be greatly appreciated, and if possible then the Map Viewer as well. I understand that EXB is released quarterly in ArcGIS Online, but even a biannual update would make a significant difference to many admins and users.