I think we should set $wgMiserMode = true; on all Miraheze wikis. This would reduce DB loads by making all expensive query special pages read from cache instead of querying the DB on every page load.
Miser mode is a mode intended to reduce load on server farms running a large number of wikis. It is enabled on all WMF wikis.
Once we set it, we would need to set up a cron for updateSpecialPages.php (every 6 hours? 12 hours? once every day? every other day?)
This would likely boost performance. After testing this on test3, and proxying from numerous wikis, there was a largely noticeable load time difference.