gistfile1.txt

~destructor(); // UB if outstanding schedulers are used after destruction. Terminates if there is outstanding work.
spawn(sender)->allocate<sender<Values…>>;  // spawns on a scheduler that the async_scope is aware of
spawn_now(sender)->void;  // spawns on a scheduler that the async_scope is aware of, blocks until allocate is satisfied
spawn_ignore(sender)->allocate<>. // spawns on a scheduler that the async_scope is aware of. This is the fire and forget version.
async_join()->sender;  // name TBD, I find unifex’s names confusing, Kirk doesn't like join though.
async_stop_and_join()->sender;  // name TBD, I find unifex’s names confusing, Kirk doesn't like join though.
get_scheduler()->scheduler; 
get_stop_token()->stop_token; 
?? request_stop() // not clear if that's necessary with the join variant; but unifex has it
?? spawn_call_now(Func)->void; // to allow us to drop execute()
?? spawn_call(Func)->allocate<sender<return type>>; // to allow us to drop execute() consistently, maybe?
?? spawn_call_ignore(Func)->allocate<>; // to allow us to drop execute() consistently, maybe?

spawn_now(sender)->void; // spawns on a scheduler that the async_scope is aware of, blocks until allocate is satisfied

I think that it is important that spawn_now() is always non-blocking - like the rest. it should throw if the allocation is not immediately successful.