You can only patch a crack for so long before it bursts and them the floodgates open and then you really got a problem.
That was the philosophy of Wren, yes we had a nice core but we were always patching areas of needs and in the long run it cost us. We weren't winning the WS in 2015 unless payroll went up exponentially. We could have patched with a few lower type players and made a run that would have resulted in a 1st round exit again, and then Heyward and Upton decide to leave for greener pastures and then BAM...the floodgate us open and there is no going back and it would set this organization back for 5-10 years to recover, and that's a disaster going into the new stadium.
This is why JS wanted Hart, to be at the forefront of making tough decesions to at least be able to handle the critics instead of throwing JC to the wolves. JC has a lot of clout though, and so far they have done a phenomenal job looking towards the future and rebuilding the entire organization from top to bottom so the pipeline is flowing and able to fill needs and retool year after year. That's why the run of division titles happened, we started with a good young core, added to that core and few big names at areas if need, and always had a viable replacement in the wings to fill an aging player or had the depth to acquire a need. That's the Braves Way, and that's what we're gonna get back to.
I'm kinda meh on the Upton deal as well, BUT if anything it adds depth to an organization in desperate need of it, and none of us know what Uptons value was on the market as a 1 year rental. I think Hart overplayed his hand somewhat, but it was only 2 years ago that we got Upton for relatively nothing but a really good versatile player, a dwindling pitching prospect, and a young and risky infielder. So while we were basking in the glory of raping the Dbacks for him, maybe his value amongst FOs just isn't as great as we think it is.