The goal of the expansion draft is to give the team a reasonable base from which to start playing with in the 17/18 season. It's also justification to the new owners as to why the NHL charged them 500 million to join. Previous expansion teams paid 80m and got to pick **** (and then sucked for a decade). LV gets to pick quality and will (if all goes well) only suck for several years.
You're fooling yourself if you believe this will be the case. As for getting more draft picks, LV will absolutely attempt to do so. If you think they're not "worried about the future" then I should probably stop here (but I won't because I can't resist and bc I'm paid by the hour). LV absolutely has to be worried about the future - and even more so then any other team in the league. Columbus, Florida, Carolina, Arizona or any other team that's struggling today still has 2-5 years worth of prospects in their system who going forward still have the potential to help their franchise. And more importantly their fans base is already established. They have a bad season, and they're still going to get 10k+ STH renewing their tickets as long as things look bright, and because of their past drafts they can always point to that as a selling point for the future. LV doesn't have that luxury. Sure they'll get a grace period for maybe 3 seasons. After that things had better be on the rise to the point where they're pushing for the playoffs (or beyond) on a regular basis or things will get really tough for them.
And my personal thoughts is that even if everything goes great for LV... it's still likely going to take 4-5 years before they're a team worth talking about (with regards to their on ice abilities). If they mess up a draft (especially one of the first two drafts), that's going to really set them back. They may do what FLA did and make the playoffs prior to that, but the only way they'll sustain any success is if they can quickly build up their prospect pool (aka draft picks).