Vegas is also a good team. You don't make major changes just because you couldn't dominate the entire league. That's a great way to upset a winning formula for no reason. There's a lot of parity in this league. Any given year, there are probably 4-6 favorites, with no clear best team. The Avs and Vegas are both in that "favorites" group. If the Avs lose, all you can do is just throw the same team, with a few small tweaks, out there again and hope next year is your year.
The plan? Stay the course. Hopefully, make some depth moves at the deadline to put your over the top.