I will post it here in advance that rollbit will have a 1 slot for sr. member rank. Hhampuz didn't announce this yet but i'm sure that there will be a slot for sr. member since the participant in that slot did not reach the requirements needed for each weak starting from week 2 until week 4. Just wait for Hhampuz to announce before applying for the slot.
I think is not just rollbit, another campaign, duelbits will open for legendary member either because
xandry move to another campaign. however, as you said above, the participant must wait to announce before applying proof. duelbits is one of the campaigns with the long term either.