Carson, by your words, I have to accept that you agree to the salvation of non-Catholics
The Church teaches that non-Catholics may be saved; this isn't a new revelation just given to you by my words. We have been repeating this truth over and over and over again on this board. The question is, "Are you listening"? I assume that this time, you have. Hopefully, from this point forward, you won't revert to the false assertion that Catholics believe all non-Catholics will not be saved.
although you consider us imperfect
No, the imperfection which I speak of does not lie within your subject. It lies within your communion with Christ's Church. Your communion is imperfect. This is quite obvious.
Are you a full-fledged practicing member of the Catholic Church? Do you submit to the dogma of the Church? Do you hold to the Catholic faith? Do you hold to Catholic moral teaching? Do you receive the sacrament of unity from the Lord's table within the Catholic Church, the Eucharist?
If not, then it is quite obvious that you are in imperfect communion with the Catholic Church. This isn't a point to be disputed; the point of contention lies within whether the Church of Christ subsists in any one visible body (remember, the Church is a body, not a soul) on earth.
Saved is Saved, isn't it?
You're confusing terms. Communion with the Church is not to be equated with Salvation. A Protestant who holds an imperfect communion with Christ's Church can achieve far greater holiness than the nominal Catholic, and his/her salvation will be far superior to that of the lax Catholic.
I see no benefit to joining something that will not enhance my salvation
I wouldn't either.
Salvation cannot be enhanced, it can only be accepted.
That depends on what you mean when you say "salvation". If you mean "justification", then I agree. If you mean "sanctification", then I both agree and disagree - for our holiness is not our own work, yet we must work.
This is the glorious paradox Saint Paul sets forth:
"work out your own salvation with fear and trembling; for God is at work in you, both to will and to work for his good pleasure" (Phil 2:12b-13).
The principle of this work is not of your own doing, for it is of the New Law, the Holy Spirit. Yet, the subject within which the principle operates will always be you, and it will always involve the operation of your free will.