I recently discovered on f-droid kvaesitso launcher.
It is in active development and is full of interesting features.
Its concept is similar to Blisslauncher one, major difference is that kvaesitso implements a drawer to host all app instead of multiple homescreens.
Kvaesitso in my opinion is more mature than Bliss: it have a lot of more configuration options, it provides configurable “quick option” in the search bar with web site preview, unit converter, calculator and more; it can search also in cloud account (next/own cloud, google drive, onedrive) and last but not least, it also offers full configurable theme colors in addition to the more usual visual options.
In summary i think it should be interesting for the e/os future development.