In general we want this to be a progression event, that is why daily resets of everyone to a particular RR won't be an option. However, to give the option to prevent excessive snowballing we will now have a vote to have it either uncapped or capped. Uncapped would mean completely normal RR progression.
Capped would mean to have the following mechanic active:
The event starts with an RR cap of 2L0, once 100 characters (regardless of realm) reach this cap it will be increased to 3L0, once 100 characters reach the new cap it increases to 4L0 etc. Only the realm rank (and consequently available realm ability points) will be capped. Even if you reached the cap, you will still earn the realm points for both the event RR as well as your normal RR, once the cap is increased you will automatically advance according to your rp and the new cap after earning 1 more realm point or relogging.
Cap is 2L0 (7125 RP)
You earn 7125 RP, you are now 2L0.
You earn a total of 94875 RP (3L3), you still are 2L0 and consequently only have 10 realm ability points available
100 characters reached the 2L0 cap, the cap is now increased to 3L0 (61750 RP)
You earn 1 more realm point or relog: you are now advanced to 3L0
You earn another 50k RP (144875 total, 3L6), you are still 3L0
100 characters reached the 3L0 cap, the cap is now increased to 4L0 (213875RP)
You earn 1 more realm point or relog: you are now advanced to 3L6