Based on what I have seen in the coinmarketcap, as the value of bitcoin increases, most of the altcoins follows the same thing when it decreases. So I would say yes altcoin value recovers anytime soon but probably not all.
Agree, not all altcoin will recover so only those worth and promising project in the market. When price drops some alts will have it's time to increase it's price. So, it is not forever in down trend it will rise.