Could you please add JackSession support? It makes working with JACK standalone applications a lot more user friendly. There are some apps who support it already and they work fine, like Yoshimi, Qtractor, Pianoteq, Ghostess, Guitarix, Jack-Rack, Ardour3, Bristol, Seq24, Jalv, Ingen, Connie, Specimen and probably more.
It is possible to use applications without JackSession-support in a session (via so called infra clients), it starts the applications, make the connections, but doesn't save the state. So obviously it would be far more useful if those applications would get JackSession-support also.
Qjackctl is able to work as Session Manager, so is Pyjacksm (and likely Patchage in the future).
According to comments on IRC by Paul Davis, it's very easy to add JackSession support to your application.
"Its really easy, just handle 1 more callback from the server. Torben's walkthrough shows what is necessary."
Torben's walktrough: http://trac.jackaudio.org/wiki/WalkThrough/Dev/JackSession
Thanks in advance,