ewilcox At present, Solus is the selected OS by default. Please add a new argument for clr-boot-manager to implement the 'default @saved' configuration.
This (i.e. the new systemd-boot @saved functionality) was actually recently discussed in the Solus Development Matrix channel (funnily enough almost at the same as you starting your first forum thread about this)
One of the last things said about it was the following by @silke
Not to discourage you, but 1) this should happen in clr-boot-manager, which is pretty much dead and 2) there needs some way to conditionally enable it, as it will prevent automatic kernel upgrades (if I understand it correctly).
This also ties into your second point. clr-boot-manager is an upstream project separate from Solus, and while Solus team members (in particular @silke) created a lot of custom patches already, and try to get them merged back into the main project, that is a slow and painful process. Of the eight open pull requests in the clr-boot-manager repository, seven are by Solus team members. The oldest ones are now exactly three years old and still haven't been merged.
The last one that actually was merged was a bit older still, and was accepted in 2021
This all just to give some context, and not to say that it's impossible.
