I know some stuff like getting new CAS items, disabling only *some* scandal types, making royals from CAS and changing how nobles are crowned probably won't happen. I mentioned them anyway just for the sake of putting it out there, given that EA hasn't refreshed anything since Spa Day. However:
The majority of my feedback doesn't request the addition of anything majorly new but falls back on features that already exist in the pack and just need to be fixed or tweaked a bit to be added. For example:
The Get Famous and Noble Introduction fixes are crucial. I would argue the same for the lack of ability to overmax royal salaries.
Making the cat crown available for dogs and sims (and making it available as a coronation crown and on a cushion)
Allowing for the grant of aristocratic titles that don't mean a noble career but just stay there the way they do for family members of an aristocrat/monarch.