I agree! The Sims Forever is silly. TS4's base game has always been a weak foundation for a Sims game. It was a definite step DOWN from TS3. That has plagued the game for a decade, now. Often, new packs or updates completely break the game. If they want to launch a sims forever game, then they need to launch one with a strong base game that is built to better accommodate add-ons.
Store worlds and/or blank worlds are also needed. There's Newcrest, but there are still distant building shells visible in gameplay, which throws an unnecessary constraint on build style. At the very least, we need completely blank slates without those shells.