Hi Khürt, Beau here, the author of Keyring + the Social Importers.

It's cool to see other folks trying out these plugins and having some success with them, and hearing feedback on what you'd change etc. I'd encourage you to post suggestions/feature requests etc in the GitHub repos for each project at https://github.com/beaulebens/keyring/issues (if it's related to service support, or basic auth type things), or https://github.com/beaulebens/keyring-social-importers/issues (if it's about one of the importers).

Are you by any chance using a really old version of the plugins or something? The plugin does specifically try to get the fullsize image for Foursquare/Swarm check-ins currently, as seen here: https://github.com/beaulebens/keyring-social-importers/blob/master/importers/keyring-importer-foursquare.php#L186

There's also a constant available (self::NUM_PER_LOAD) if you'd like to easily control the number of items downloaded per request. You might also be interested in the keyring_importer_stop_after_imported_count filter, which was added to help with debugging and add some control over what gets imported: https://github.com/beaulebens/keyring-social-importers/pull/11/files#diff-f80b92367102fa02a38bf7d6911e08d5

Cheers.