One reason I am disappointed we do not have GP or SP anymore. Some EPs could have gone the distance (but came up short) and a GP or SP could top off what was missing from existing EPs.
If R&L had a complimentary pack like Medieval, Victorian, Tudor, Regency, etc. to fill in what they missed out in but to use in conjunction with Noble Career, Dynasties, etc. Those who wanted a more era noble pack can, and those who wanted to stay modern could.
Or if IL had a complimentary pack to expand Mermaids, adding ability tree, underwater living, etc.
I honestly, am thinking about suggesting even a RoM upgrade (instead of refresh) to have the GP -> EP. Since Spellcasters seem like the favoured occult (even to those who don't really play occults). Turn the 1 neighborhood into 3, add more spells, more cross-pack occult friendliness, a spellcaster career, more BB/CAS, add fantasy recipes, more fantasy plants, maybe an occult school for children to young adults, add more floating isle in the Realm of Magic (make it a non hidden world), etc. And those who already own RoM could get a slight discount for upgrading to it to EP.
I think one issue is either a good portion, or even the majority of Sim players do not want or at least do not need an era or occult based game. They mainly play realism or slight fantasy sprinkled gameplays. Which leaves those chasing era or occult gameplay in a lurch.
This makes it very difficult for those so close to having their preferred themed or playstyle game... but always short because the game still has Sims heavily dependent on mobile phone and computer just for gameplay (careers, aspirations, skills, etc.).