When Obarun will not be able to run anymore due to Arch development
depending of the numbers of dev (i mean,people really interested and ready to consume time to devellop) which would be integrated on the project. Concretly it's a question of packages now. The base system is operationnal, for a long time now, the init and service manager is a rock (not well incorporated, some change will arrive is the future), the basic tools to maintain and handle the system is ready too... so, with some good packager we can have a system without system:D which provide a lot of software.
The ultimate step for me,it's to provide an initramfs alternative (yes with s6, tested on my main system, very very very fast) tools and an real alternative to udev (some good news appear about that but not ready to provide all the functionnalities that we need for complex desktop :
https://git.skarnet.org/cgi-bin/cgit.cgi/mdevd/, and this will take very long time to be operationnal for sure). and after , Fu@ ^# \ off system:D as long time as main upstream of principal software allow to use their works without system:D(i think about udisks2 for example which do not accept any bug reports if you use and build it without system:D....).