Those are great points. I thought about addressing them above but decided not to for sake of focus and brevity. My focus was intended to be on the widow.
I think I was trying to approach the subject from the Good to Great dynamic. Yes it is permissible to marry both a first and additional wives for love. The determining factors in that equation are the individuals involved and God.
Please note that when I'm referring to permissible, I'm referring to Godly permission, not cultural. I'm kind of a having done all, to stand type. I like the quote by Crockett, Davy Crockett. "There's no stopping a man who's in the right, knows he's in the right, and keeps on coming!
Is it permissible to marry another woman? In all but a few instances yes (adultery, incest). Is it always wise to marry another woman? Imho. It depends entirely on the woman. In my heart I'm ecstatic for those who have been blessed and God has considered them worthy of double or triple honor. In like manner I also grieve, as I'm sure others do, when a home is torn apart whether mono or poly.
I believe it is possible to learn from both examples both what to do and what not to do.
In a theoretically perfect mono or poly household, the adults engaging in marriage would be pure until covenant/consumation, have been raised in a Godly home, each individually mature in their faith and committed to following Christ. Then to make it even better, they would have similar world views on politics, doctrine, headship, homemaking, children and money. And the icing on the cake, poly is accepted culturally by everyone inside the relationship as well as outside of it.
Even with this marital utopia, there will be issues to work through, childbirth and providing for the needs of each other. Each of these things having a possible negative or positive effect. Even with the utopia mentioned there's no guarantee in this day and age that it will survive.
In my perspective, a wise man counts the cost before building, then double and triple checks his figures before breaking ground. It's much easier to make changes or adjustments on paper. In my profession I am a General Contractor. Part of my job is to compare the blueprints with the job site, check for anything that could hinder or halt the timely completion of a structurally sound project and address any potential issues before we break ground and in some cases before the contract is signed. With the best possible oversight every job will still have its own flies in the ointment that will need to be addressed as they surface. There are many customers who have approached a custom home with great anticipation and enthusiasm only to swear by the end of the job they will never repeat the experience. It became hell on earth. With few exceptions, all of the major issues that they faced could have been successfully avoided by being more cautious in their choice of a GC, their lot, or their architect. As a GC, often the factor that has the most to do with success is the client. Part of the job is to manage people and their expectations. Knowing how to do this can be the difference between irate customers and ones who think you walk on water. It is also advisable to know when to fold em and walk away presumably pre contract.
I may have come across that I think it's a last resort option. That was not my intent. I believe that poly can be and was designed to be a beautiful tool by God to provide symbiotic helpful relationships just like mono. It can be a beautiful thing. I just see the danger in approaching this for anyone who currently has a blessed home and has not counted the cost in a risk vrs reward. It is the bird in hand dilemma. Is it possible to acquire the other one in the bush? Maybe. Is it possible to acquire it without losing the one in hand? Maybe. Is it advisable? Maybe that is not for me to say. I just know that all of my 'works' will one day be tried by fire. It really makes me pause when counting the cost. Will my reason of love make it through that fire? I don't think I have that answer. I feel much more confident in biblically justified and directed need.
Thus, the reason for my approach above.
Please don't take this the wrong way. Im not trying to beat anyone about the head and shoulders over differences of opinion. I had a foreman years ago who told me, There's a good, better and best way to do everything. Sometimes the best way to do something on one job is not the best way to do it every time.
I realize as well that the Hosea directive and the kinsman throw a monkey wrench into the analogy but it's as close as this tired brain can get tonight.
I appreciate the mind stretching too.