The current market is in under observation. But I agree with you that this year will be a good season for altcoins movement that we have never seen before. Many are speculating that Bitcoin could go from $100k or more then it this year. In that case, there is no doubt that almost all Altcoins will make a good position.
if bitcoin reaches that high pump I'm afraid its dominance is too strong and it could affect the growth of altcoins.
might only experience minor growth for altcoins if bitcoins were that strong. but it might be good when bitcoin can do a big, steady pump for long enough. it will build altcoin chances of getting amazing pumps.