The meta info is treasure for a well-written bot. The problem is, fetching it on every login is bandwidth waste, and relying on an obsolete cached copy might produce bad results.
Is it possible to create a way to check if (and what) meta info has changed?
The best idea I came with is a request that will supply the "last fetched here" timestamp and will get a description of what meta should be re-requested. For example, the description may list the meta types and their parameters that should be requested. Then, the bot may request them if / when needed for its task.
(I came to this idea while trying to write a new version of Apibot.)