If we look at how long e been take the SEC to approve Bitcoin spot etf in the United States, you go know say Altcoins ETF no go happen overnight, if at all e go happen. I don't think there is enough request for either Ethereum, XRP (or any other altcoin) spot etf in the United States, na just as dem approve Bitcoin spot ETF i begin see news wey dey talk say na altcoins be next.
Having said that, make we watch wetin go happen, but you know say altcoins dey more risky than Bitcoin, because many of them no get use cases, so i think the SEC go dey very reluctant to approve any altcoin ETF.
I think in that case we will have to wait till May, and see if the US SEC, will approve the Ethereum ETF, since it is still awaiting their approval. SEC might want to wait a longer time as you said to see how the 11 companies including blackrock, will perform in the Bitcoin ETF, before they can consider to approve Ethereum ETF that is next in line. I will like to see it approved for Ethereum, but it is the united states'SEC that can make it possible or not in May.