It's simple question, but it's not so easy to answer and I don't know what to say without thinking for some more time. In general, Bitcointalk is stuck in time, without going deep into details forum looks same like in 2010 and probably it's not that easy to implement changes to such old software.
In general, I'm fine with current state of forum. Offcourse, there is lot of room for improvement, like responsive design on mobile but I think it's difficult to expect big changes. In last few years we didn't had any big changes, and in general, what was last significant update. Trust flags maybe?
What one change would you like to see in bitcointalk in 2023?
Why is everyone wants to change some of the features on this forum?
Why aren't we happy with the current setup of the forum?
If there was to change anything, theymos would have done it already. When the forum admin did not want any changes and think everything is perfect, why do we insist on the changes?
Maybe because Bitcointalk got so outdated? Since Bitcointalk was launched world has changed a lot and forum got stuck in past.
If it would be so easy to implement changes, probably it wouldn't had taken almost 9 years and counting to make new forum software.
P.S. I'm fine with current forum, but I understand people who ask for changes.