According to PANews, Ethereum researcher Toni Wahrstätter has released a research report on EIP-7623. The proposal aims to increase the cost of calldata, which is primarily used for data availability (DA) transactions on Ethereum. By setting the base gas price for non-zero bytes in calldata to 48 and zero bytes to 12, EIP-7623 aims to reduce the maximum block capacity, including blobs, from 3.5 MiB to approximately 1.9 MiB.
The report states that after the implementation of EIP-4844, the average block capacity increased by about four times. The goal of EIP-7623 is to narrow the gap between the potential maximum block capacity and the average block capacity on the network.