Hi Derek,
This thread stays on my mind and heart, so I am thinking I would like to try again to address your sincere and valuable question the best way I know how.
I think that initially, to have "faith" in something means that this is where we place our trust. It is not the same thing as "believing". However, if what we put our faith in proves by experience to be trustworthy, then we begin to believe. If what we have trusted continues to yield these same results, we continue to believe. If not, we don't--and it can hurt. In this case, I would say that losing one's belief would also amount to losing faith in that which brought us to said belief. And it might hamper our ability to trust in anything again, at least temporarily. But I think it is possible that if we are to have any kind of hope or mental health, we eventually have to trust in something, even if it is only ourselves.
On the other hand (sort of), if we have trusted in something we see as "higher" than ourselves, and it has consistantly brought forth blessings of the spirit, I think that if we remain willing to trust even further, we can be blessed with surprises in that our beliefs can change a bit. In other words, we learn to trust the "teacher" in whom we place our faith. And this can be a most wonderful, exciting, joyful thing. And peaceful...so peaceful. It can lead to resolutions of the spirit in such areas as acceptance of others as equal in the "eyes" of Love.
So can the loss of belief ever be a good thing? Yes. So can the expansion of a belief (in which case, what we have believed is not necessarily "baggage", but something we may build upon and grow from). Can the loss of faith ever be good? Yes, if we find we have put our faith in something untrustworthy. But it can take so much time to hopefully recover from the temporary inability to trust in anything.
I don't know if any of what I have said truly addresses the issue the way you see it. But, as I said, your question was on my heart, so I thought maybe this could help you or someone reading it.
InPeace,
InLove,
Debora