I think this year the price of crypto coins will keep grow, and we can have small grow and even if not happen to a fast grow maybe is more healthy step by step grow and a bull run can start if their are enough people who will come and buy.
I think most altcoins will never get back to there last all-time high, and for the ones that get there, most of them will be their last all-time high dollar price, not their all-time high bitcoins price.
New people buying there the first crypto each day and most of them want to have bitcoins, so the future for bitcoins in 2019 and beyond looks really good.
If ATH happens before next financial crysis most of altcoins will reach new ATH. The ones that simply totally failed to deliver will of course never had any ATH. But the rest that still promises to delver will keep the price high. If financial crisis hits then stupid money will left crypto and those Shitcoins will go close to almost zero.