Some have already been put in place, with an updated bot running the upvotes on Discord which allows us finer control than we had before. As well as the recent increase in our filtering and content quality checking. It helps to curb the spam and inflation in the voting for the most part.
We increased the cool-down per user to 24 hours.
We turn off the upvotes for 1-2 days every 3-4 days as VP dictates to let it rest.
We are waiting on a fix for the algorithm for vote weight % to be fixed (currently it doesn't scale well below 1% votes). That combined with increased SP delegation to the @minnowsupport account (allowing us to lower it from 0.5% and still provide some value) will be a huge part of the fix.
Beyond that, we are not sure. We will determine more methods as we get closer to an issue. It's just a game of approach a problem, determine the solution, fix it for the time-being, and move to the next one.