Bigger blocks introduce bigger problems.
The only transactions that truly belong on the Timechain are final / forced settlement transactions.
99.999% of Tx should be happening in sidechains / channels, for reasons of speed , flexibility, and privacy.
"Small blocks" is a feature, not a bug.. It's forced the development of independent L2 scalability solutions and ensured the decentralisation of nodes.
Neither my coffee purchase, nor my daughters bored monkey transfer, belong in an interplanetary ledger designed to last 10,000 years.