Pascal Terjan:
I am not convinced it would help large scale attacks. Running 50 relays is not much and it each was providing 0.49% of capacity that would give them 24.5%... I would expect that an attacker would create more relays than that and unless there is a good way to find out this is a single entity, they will all be well below 0.5%
Yes, they will try to circumvent thresholds by pretending to not be a group. The good thing is that this requires additional resources and time on the attacker side to hide the fact that they are adding many relays without triggering certain detections.
kind regards, nusenu