The downvotes depend on the amount of submissions by our delegators. The admin team tries to make sure there's at least two, as we use 125% each round (12 hours). But when the delegators are active it can be more, the maximum has been 8 so far I think. So 50% would only work when activity is very low ;)

For me personally scaled is more important because we calculate the value of the downvotes and adapt when we would vote < 0$, which would be kind of a waste. It's better when all the trailing votes adapt accordingly.