Why would you increase it? The goal was to stay small enaugh for small node to exist and protect the ledger by being fully decentralized. Making it bigger put the network in danger of centralisation
Discussion
I think you're conflating block size and the mempool limit
Maybe 🤔
Block size is a consensus rule and mempool limit is a user/node settings
the latter is just how many unconfirmed transactions you allow on your node before you start dropping the cheapest ones