This kind of survey is essentially meaningless.
For example, I would support such a strike IF circumstances warranted it....but that's not a blanket "go for it" acceptance. Should NK attain ICBM capability that can reach our mainland AND upgrade to multiple megaton payloads...then yes, we would have little choice but to directly annihilate that capability. We are not their yet, so right now I would consider a large scale US attack on NK to be grossly premature...though there are cases in which I'd support a more surgical strike to take down a testing site or kill leadership.
As for a draft, very unlikely barring full scale WWIII. The South Korean army with the support of US forces on the ground...and heavy naval and air support from the US..would be sufficient to defeat any NK ground invasion. Albeit, at great cost in life and limb. A mass call up of draftees just would not be necessary...or desirable...from the view of the military. The professional volunteer forces are vastly more effective than a draftee force any way, so a draft would literally be a last resort.