Zero? There's at least one repercussion. Jeff becomes the biggest target to the rest of the house when Dani leaves. And he knows that.
The flipside is that if Dani stays, he's her #1 target too.
And the bigger problem though is that Jeff has a physically weak alliance. None of Adam/Shelly/Jordan are very good at competitions. It's doubtful that any of them are going to be the next HoH. It'll probably come down to Porsche/Kalia/Rachel if Dani leaves. Unless it's questions, which it probably will be with a DE, though that's only gonna be 1 comp.
But then, leaving Dani around wouldn't do him much good either, unless he makes a deal with her, and she somehow sticks to it through the DE.
Dani will probably go this week though.
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ziggie ziggie wop wop