I was observing a invasion today, and i found myself wondering how meta-events handle scaling.
What prompted this was that i was first at a aetherblade event, and all the mobs that had spawned were veterans.
Meaning that all the mobs seemed to have scaled up because of the number of participants in other parts of the meta-event.
If this is the case, it makes it very hard for smaller groups of people to aid in the completion of the meta-event by taking out neglected sub-events (in particular as clockwork mobs are a pain to deal with compared to molten or aetherblade mobs).