I don't think many alts would recover against Bitcoin if this happens and so they will crash even more. Some solid alts with good liquidity like Litecoin may recover but most won't recover in my opinion. Thoughts?

in my opinion if Bitcoin goes to 5000 again its a good thing
it gives potentially a lot of space to grow! for example now BTC is 9k, you can make 5x only if it goes to 45k
and if BTC falls to 5k - you only need it to go to 25k to make x5
also it gives an opportunity to cash in some Fiat and buy cheap alts
cheap alt = easier to pump
conclusion: if BTC falls to 5000 again and drags altcoins with it - we may see another x100 of alts next bull run