The Vegas Golden Knights don't need anybody now
Here's the thing with this aspect. Anything can change at a moment's notice. The Vegas Golden Knights could need a bottom-six player if one of their in-house forwards gets hurt. After all, the injury bug is unpredictable like Elon Musk, striking at any time.
But the Golden Knights don't need anybody at the moment. Even without Jake Evans on board, the team has no glaring issues besides Alexander Holtz. Even with that, fans are clamoring for an Alex Tuch reunion, which would also benefit the Golden Knights.
Positionally, the team's set at every spot. They're strong down the center, are getting surprisingly good production on the wing, and have seen their goaltending improve. Even the penalty kill has been strong in the last 10 games, killing 21 penalties in that span. They've also allowed three power play goals in that timeframe, leaving them without much else to consider.
Currently, McCrimmon is fine with the team he has. That's a good position to be in. Why fix something that isn't broken... or is winning six straight games? When you're near the top of the NHL, you don't have much to worry about. That's the beauty of running a well-oiled machine, after all.