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?

The value will be low of altcoins if bitcoin down to $5k price. But I think bitcoin will be moving in coming days and we know that every coin price is depending to what on demand in the market. So lets keep observing and grab the opportunity of bear market as you can the market is volatile who knows if one day all will be on higher price like before.
Most of the time traders who followed solid projects will anticipate the big downfall to their supported project when bitcoin suffer with big loses, with that, instead of worrying they will take the opportunities to buy more and hold. Those investors who are optimistic will keep finding ways not to fall into panic but will engage to long term process aiming to make better outcome when bitcoin and the market start to bounce back.