Keccak256 hashes of data larger than 136 * MAX_LEAF_COUNT bytes are possible on L2s with a higher block gas limit.
We think only hashes originated on L1 will need to be provided in LPPs; hence, we are only submitting this as QA. However, if it is necessary to provide such a preimage, the MAX_LEAF_COUNT in the current implementation of LPPs will not be sufficient. It will not be possible to use loadKeccak256PreimagePart() either, due to exceeding calldata limitation and block size limit, which could potentially prevent a valid state form being proven.
