apart from the security risks, changing the algorithm (based on the proposals that i have seen so far) will not solve anything at all. it will not even change anything or even put a dent in the power that companies such as bitmain has!

the only thing that it does is to fuck with bitcoin, its price and any small or new business (like the Japanese Internet Giants) that have just entered ASIC manufacturing because bitmain has already made their profit and if the change happens they simply start creating new ASICs and make a lot more profit than before because they start selling more since the old ASICs would be obsolete and miners have to buy new ASICs. so in the end that change will just make bitmain bigger.