I have never flown for a fractional, so take this with a grain of salt.

But I have flown with many, many FOs who came from Netjets and none have regretted it, most wish they did it earlier.

The first year or so at a legacy might be hard because you'll most likely be commuting to reserve, but once you are able to get based in Dallas, it will become the best job in the world (even on reserve!).

Also, the best time to get hired at a legacy was yesterday, the second best time is today. So just do it.