this will be another depressed year for the most crypto projects. I will not surprise if some of top 100 currencies will collapse in 2019.
Most probably, you will be proven wrong. Definitely this year will not be that much struggling like we had in 2018. It may be boring year for the people who are all looking for exciting rising markets but for long term holders there will be no big differences from last year.
I am expecting crypto may bounce back this year sharply. Most cryptos will have new ATH and like you mentioned top 100 coins will not be a big concern when they will be failing or even get collapsed too.