Anywho, which was a very lengthy and drawn out way for to say that I think RS3 is still focusing more on a few large upgrades, and without surveys and blogs in the openings, the focus instead is on the MTX promos making it feel so much worse.
I hope that OSRS gold will be able to earn at least a little of a dip back and get out of this slump it seems to have dropped in as around Menaphos. Maybe it is wishful thinking to hope that all the alterations to this OSRS Team this season might also mean more internal stuff has happened on RS3's conclusion to going into 2021.
Mod Warden even went on record stating Runefest's guarantees were very far fetched for RS3 and too ambitious, which affirmed lots of the community's suspicions.
Like you mentioned, I am happy both matches have seemed to move away from this expansion model. It doesn't work well in either game IMO.
RS3's content release strategy did change this year though. They have moved to having bigger updates every month today. Cheap Runescape gold also has the"Ninja team" which make significant QoL updates based on player requests. That is essentially the same polls we get.
Regardless I don't think the"expansion model" was ever a thing in OSRS. It's just how things needed to operate due to the absence of developers in the group.