Don't concern yourself with the dominance of bitcoin as far as market cap. Even though it was reduced, bitcoin is still the number 1 coin because all other alts are moving as well that's why the market cap is somewhat shrinking but bitcoin still sits on the first place.
I wouldn't see that we are moving towards another bull run like December, may maybe targeting levels like $9500-$10K. We know that there are mental barriers here that we need to break down. Happy to see that $8500 resistance is broken so lets see if bitcoin can break or even touch 5 digits again.