History has a habit of repeating itself. However, the pattern of prices after the recurrence of history, make their own adjustments. That's why most likely this year, we will not see last year trends repetition. The only thing I do not doubt is that the price of bitcoin this year will update the historical maximum.
I think altcoins also will bull run, but not like last year.
So take the example Ethereum, i predict it can reach $2K USD at end of year.
Not so speculative, and yah Maybe regulations and adjustment can make the price stable and people dont have much risk when decide to invest in Bitcoin or Altcoin.
Ethereum has that much capacity to grow. It can touch 2k dollars by the end of this year and is not very volatile rather it makes slow progress with time. But it should not be the coin to talk about. Bitcoin is what really matters here because only this coin can give huge amount of profits within this year and it is the most difficult one to predict. It would be going to reach 30k dollars in this year. Regulations and stability are unwanted features for now.