I shall use an example to hopefully my version of submission.
With my ex gf she was the first to deny a request. Despite being overall “submissive” she was not desiring to listen to me. In response according to what you think is “strong submission” I should have ordered her to do it (not sure how that would have gone lol) But I did not make any kind of demand of it, I expressed my mild displeasure and left her to her individual rights.
Now this was in the context of something fleeting in the sense that we could procede with life without it. But this context is to show how expecting submission doesn’t equate to “orders”. Now when we come to major life decisions I will admit it gets trickier, but the reality is someone HAS to submit in that sense eventually.
People can give all of the two people can agree stuff all they want, but at some point you have two options, stop being married, or someone yields. In most cases I would say to defer to the man IF said decision is at the point of no option other than divorce or yield and ONLY IF said decision is within all moral parameters. That differment at that point is the difference between what God wants and what secularist should call divorce time. Because without God at that point there is no differment and only divorce.
SO basically the only time the wife truly submits in giving up her “will” would be to literally save the marriage IF what she is submitting to is morally good.
How I see any submission with the exception of the above. Is Christ is head to me and I go to mass on Sundays while he was tortured and killed. A bit of a difference huh? The man can not expect a submissive wife if he is not willing to do for her. as I said with the ex gf she was submissive yet she always got what she wanted

complex huh?
I can say with her while it is funny since she is the ex gf, and much was a bit of an act playing at proper. The best part was MY ability to lead in something Christlike. MY ability to serve her. And despite the heartache, having gotten to taste something as sweet as what a realationship looks like biblically and it tasted so sweet nothing can compare to it except to experience it again. To be able to give yourself to someone completely (or as much as imperfect humanity will allow) is beyond amazing.