Since Murena like their own Bliss launcher very much and apparently many users like it as it is, too, you are left with such subjective sentiment and nothing much will change in /e/OS in the way you want. That’s more safe to assume at least than betting on substantive launcher change.
Even if they are abandoned they might work fine as they are?
(The old Lawnchair version I’m using sure does.)
Did you already check out Trebuchet from LineageOS on /e/OS 2.x? …