So, resetting post-draft, and assuming no Kawhi type deal is coming, the roster currently looks something like:
Irving / Smart(RFA) / Rozier
Hayward / Tatum / Brown / Semi
Horford / Morris / Theis / Williams
That's 105m+Smart. I'm guessing they try to get Baynes on a ~5m deal, and either re-sign Smart or use the MLE on a replacement for him. That would round out the top 12 and put them at 118-122m, depending on Smart. If I'm Dallas or someone who wants Smart, I probably have to offer 14m+, because for the C's to match they probably end up in lux tax land and start the clock, which I'm guessing they'd want to avoid.
That leaves Yabu, Nader, Bird, Allen outside the top 12. At Yabu's salary, I would think he's a prime candidate to get shipped off if they re-sign Smart.
In addition to an exciting top 5 (either starting or ending) of Irving-Brown-Hayward-Tatum-Horford, that feels like a really solid rotation all the way down to 12/13.