API Feature Request - Filters for GET/channels/{channel.id}/messages

[Bobby-Carter]

I'm trying to write an application that can retroactively act as a leaderboard for which messages have the most emojis. I think it is fully possible to create a bot that listens and keeps track of all cached messages, but un-cached messages are a problem.
Getting old messages through the API is limited at 500 messages every 5s, and in a server with multiple channels that have 50,000+ messages, it just doesn't seem realistic to include messages pre-bot in the rankings.
I'm hoping to request a feature that would allow the caller to filter which messages are returned through url parameters. For example,

GET/channels/{channel.id}/messages?reactions=true

returning only messages with reactions on them would be fantastic.

Would anyone else appreciate this feature? Any suggestions to accomplish my goal in the meantime?