You basically have two schools of though on the issue of reform or revolution. The reform path is mainly working on pushing the current system in a better direction, while at the same time building alternatives. Since the biggest problem currently are private corporations influencing politicans, that would propably be voting for the best the current system really allows, which is social democracy. At the same time you destroy the private capitalist corporations by building up cooperatives.

The other option is revolution, where you try to destroy the old system and fully replace it with a new one. So you ban capitalism outright and try to set up something new. I happen to be of the opinion that revolutions just end up quickly scaling up ideas, which were around before the revolution. So those ideas need to spread and they can only really spread by actually showing at least some results. Hence you have to set up small scale new system anyway.

As for what is better. Honestly a revolution requires luck and is unlikely. So I prefer the reform approach as it seems to me to be a safer path and also allows the option of a revolution as it is sure to plant the seads of a new better time.