When a highly-used item is edited we are creating too many recent changes entries on the client wikis. To reduce this noise we should limit the creation of recent changes entries for these cases to the pages that are linked via a sitelink.
So if more than N pages on the current client wiki are affected by a repo change, the change should only be in the RC for the directly linked page. Other types of updates should probably not be affected (page purges, …). N should be configurable.
Open question: Where should the cut-off initially be?