As I said, the prerequisite is bitcoin, not Ethereum.
I think if we see a massive correction on Bitcoin that may trigger other altcoins to surge but that's still a speculation but a possibility since some are eyeing on altcoins considering Bitcoin is in overbought state.
A massive correction from bitcoin can trigger a massive rally of altcoins as bitcoin has risen too much and has not yet stop after many weeks. Corrections happened but not much dip and bitcoin rallied, then rose more after each correction so far. Altcoins were restrained too much by bitcoin.
Another possibility is bitcoin won't be corrected too much but it sets a very stable price range and make a safe feeling for investors. They won't see any risks of massive dumps, massacres, they will buy altcoins. Altcoins will be bought up as they see more profits from altcoins when bitcoin is stagnant.