Thanks @Accumulating.icp , I think this is a valid point - let’s think about this!
I agree that with less overall voting power one could reach the % relevant for decisions.
However, I wonder if it would be easier to reach this % - I think this would depend on how many tokens are in circulation and could be bought by an attacker. I assume that for an attacker it would be hard or impossible to get the sleepers to follow them - so there is a lot of locked tokens which are not “free” to get for an attacker and cannot be used for such an attack.
At the same time for neurons that now have a lot of voting power due to sleepers, it would probably become harder to launch attacks as they have less voting power relative to the decision making, right?