Wow. That is probably one of the most arrogant things I've ever seen you say. We should be thankful the system exists? Excuse me? It is nice to have it there, but it benefits both banned users and Sythe.org mutually, so pinning it on people who have been pardoned, such as my self, is just downright rude.
Your entire plan is flawed. No matter how much a person seems to have changed, or how much a staff member wants to think they have changed, there is no way to be 100% sure until they've proven it, which is why things like Market bans and TWC's are the perfect safety net to confirm that. Eliminating those is just like saying "Well I sure hope we're right, YOLO!".
Also with the two admin veto thing, just because there hasn't been any cases yet, doesn't mean there won't be in the future. Having 2 admins veto is just an extra step that will help in some cases. If you support all the vetoes, then go ahead and support them to make it two, no big deal. There is no reason not to implement it unless you just don't want to have to go out of your way to post "I vote to veto this".
And the next time you decide to showcase your amazing PR skills in a post, I suggest you remember that systems such as these benefit the banned user as well as Sythe.org as a whole.