I can make File→Open issue the multi-file 'open' command, but in that case the command uses each file's full path; it doesn't compress them using any type of globbing of course. But the open command will only interpret multiple files as a volume or volume series if the name has wildcard/glob characters in it(!), even if you explicitly say 'vseries true'. So with your data, a long 'open' command gets issued, but you get one volume viewer per file and one file-history entry per file. Not optimal.
There doesn't seem to be any equivalent in the open command to what File→Open has been doing with multiple files, which is to call session.models.open(paths) directly, which creates a single volume out of the files. In order to fix this we need some way to make the 'open' command work then same way when given multiple files.
I am re-assigning this ticket to T.G. and opening a separate ticket for '"open browse" file browser does not allow multi-file selection and opening.'
--Eric