I don't buy this "get a swarm, get a problem" rationale. I also don't buy bees. All of my stock (including 2 extra's so far this year) have come from swarms/baits.True you may well get some sort of aggressive colony and that is one attribute that is undesirable (so re-queen like anyone else when queens from desirable stock in your apiary are available now onwards), but equally you may get hold of some genes that have been surviving without intervention, being productive, wintering efficiently and 'cleaning' varroa successfully etc for many years. Whether you can accomodate the temperament of your bees depends on keeping location and your own approach of course. Now whether they are from the wild or from another beek depends on your location, my location means I reckon mine are probably 70% likely from the wild (and I have never had a marked queen in the 7 baits/swarms I have housed).
Most of us (me included) are not decended from Langstroth, Hooper or Brother Adam, our ability to breed queens (as opposed to simply rearing them) is limited.
Your purchased nuc is often made up from local bees (with what temperament?) and a purchased queen from somewhere on planet Earth, the fact that it is purchased does not gaurantee temperament and certainly does not come second generation. I can think of about 200 reasons not to buy a Nuc (they all have the Queens head on one side). If you have the gear sat empty and can get hold of some used comb and a bit of lemon grass why not have a crack? It's a shot to nothing surely?