The problem w/ ever thread on this topic is that few look at a time table. It took MH/TT quite awhile to put things together in Seattle....5 or 6 years if I'm not mistaken?
If it takes that long in GB, you're looking at replacing almost ever player of any current value. Driver, Franks, Clifton, Tausch, Favre, Henderson, Green, Woodson, Harris, Barnet & KGB almost assurdly will not be around. This just in, that means you have to find replacements for those folks too. Likewise, that doesn't take into account any career ending injuries that may take place. While a number of these players may not be what you'd like them to be, most are productive pros. A quick look at history should prove to you that these guys just don't grow on trees.
I'm hoping for the best, but I'm afraid GB has wasted the last several years by not putting enough weapons around Favre and this core group of vets.