I think there is nothing to fix with bitcoin , because bitcoin is very good, but only one is possible for us with the problem of delivery that sometimes, long to wait until 6 confirmation ...
Have you been living under a rock for the past two years, a new user of bitcoin or you genuinely do not know the true state of Bitcoin's major problems? If Bitcoin's issues are not resolved on time so that mass adoption can take place, it will simply lose dominance and become obsolete while a more usable altcoin takes over.