Ether developer Tim Beiko explains why the Berlin update did not include EIP-2537

Ether developer Tim Beiko explained on Twitter why the Berlin upgrade was not included in EIP-2537 saying that its more testing was needed for the Berlin upgrade and the team in general agreed, but when we discussed including it in the London upgrade, someone suggested a new library that we should use and possibly modify the gas cost, which required more testing because it didn’t cut gas. Also, it went from a very good possession (pre-deposit contract to start to verify the deposit) to “we need this before we slice it”, so the urgency was greatly reduced.