At present Sailor Moon
is regarded as a classic - Precure
That's why this business decision seems quite weird when you consider the timing.
We'll never know, but Toei apparently has a hard time with the Sailor Moon IP since around the PGSM era and they're probably done with new animations.
As shoddy as they are, I don't see why they would try a reboot instead of coming back with the old character designs and voices. I think what they're doing with Precure now is what they envisioned for SM while they announced Crystal back in 2012. The fact that Toru Furuya attended announcement events and Rica Fukami expressing excitement over it on Twitter back then may indicate they were considered for the project.
Well, I respect fans who are totally fine with retellings but this wasn't what 16-year-old me was expecting back in 2012. This has been a godawful ride.