Just so you're aware, my "assumptions" are based on some of the things you've said which have certainly given the perception. No need to bold and capitalize things (with increasing size, lol) I'm not stupid!
I think you just have to realize that the way you put things guides a perception.
For example, you mentioned the issue of teams just being able to keep all of their best players under an uncapped system... from that you said you weren't worried about them building super teams through free agency... but the flaw there is that keeping your players to maintain depth is actually a crucial part of the free agency process. The two cannot be separated.
So, you are in fact saying that you are concerned that super teams are going to be created. The extent of how super is something you've given a few variables, but your opinion is that these teams being able to stay together longer will have a negative effect on competitive balance.
There may be some truth to that, and we'll see eventually as the new process takes hold. But what I'm saying is that it's not going to be as dramatic as it's being made out to be, because even if you can keep all that talent that doesn't mean you're going to win a championship or go on a dynasty run because as I've mentioned many times now and it is a fact, that not only have the most talented teams or overall best teams not been dominating, they haven't been taking home all the titles either. We both agree on that.
Although it's a bit hard to make out because of how the sentence began, I believe you were trying to say that the big market teams will be winning 12 games on a regular creating another issue:
I say this won't be an issue as long as they're not winning all the championships (and I don't believe they will). It's actually good for the NFL if the large market teams are successful.
I disagree with that one very strongly.
I think the overwhelming consenus is that a dynasty in sports is defined by championships, not simply keeping winning teams together. I don't recall the Utah Jazz--a consistently winning team--having kept the core of their team intact for a long time being called a dynasty with no rings. Or the Buffalo Bills who lost 4 straight Super Bowls being called a dynasty. One could make the argument that these teams ruled their division or conference since there is definite truth to it but attaching the word "dynasty" to that is too hard to do without being tongue-in-cheek.
In football, a dynasty takes place when one team has won more championships during a period of time (usualy within a decade) than anyone else during the same period. The NFL itself has produced a lot of film and literature over the years that defines it that way and they've made it sort of a mission to make the public understand their stance on it. The current dynasty is in the hands of the Patriots (3 titles in the 00's). I think a dilemma will start when one team only wins twice during a decade, or if two teams win 3 or 4, but I suppose we'll all cross that bridge when/if we ever come to it.