HH:-
Good or Bad is a personal call IMHO
No problem with that. Surely that is the whole point of this discussion. You think that history is on the side of the EU and that it will go on from strength to strength. I don't.
All of the processes that you cite in your post lead inevitably to more and more power being concentrated at the centre, with less and less of it at the national level. That is the very trend that led to Brexit (just!), in my opinion. As it moves inexorably on it will lead to more friction and more resistance. You have already spoken of smaller nations being obliged to support a European Army. Obliged hasn't worked too well in the past has it? What happens when a State stops being obliged and instead moves to resist? Is that when the European Army has its first real test? Is that when the European Civil War begins?
As one Tory grandee once remarked on the difficulties that can be encountered in your inevitable Grand Projet, "Events, dear boy, events!".