I think a longer view is recommended:
1) this team is off to a fast start, unusual for AV compared to Van and NYR first seasons, a good sign
2) the team's success has been driven by the goalies getting red hot in November after a bad October, but note they managed to tread water with bad goalies that month, but it also suggests some regression is to be expected
3) the team is still a work in progress, AV and Fletcher are probably just now getting a feel of how the players fit with what AV wants to do, some tweaks are almost inevitable the next couple months.
I think a lot of moves so far are just AV "feeling" out his team, seeing how different players function in different roles.
One glaring hole to me is the absence of a prime-time "Simmonds," the guy who can park in front of the net, set screens and score on rebounds.
They've tried JVR in that role, but he seems better suited as a sniper planting himself 5-10' from the net.
Lindblom tries but is a bit undersized and doesn't have the great hands.
The other problem is that Frost and Farabee are on the steep learning curve, they may not be effective until the spring or next year, it's not that they're a liability, but dealing with NHL speed (and NHL size for Farabee, given his style of play) and finishing plays have been an issue for them.