Our league is actually pretty tight in the standings.
For example,
Goals: 53-to-41 (2nd to 2nd last). 13point swing there.
Assists: 88-to-80 (1st to 10th). 9point swing there.
+/-: 9 to -11 (4th to last). 11point swing there.
Wins: 10 to 7 (4th to last). 11point swing there.

There's a lot of points that are being switched daily due to tight categories... and G/A/+-/W are some major ones.
So I think people are hesitant to shake up their team.
Nothing worse than bailing on players you drafted... only to see them start performing after you've dealt them. We all drafted our players for a reason.

I think we'll see more trade offers later in the season.

In ROTO, it's not until a bit later in the season where you start the thinking of:
"OK, I'm out of it in _____ category, so I might as well trade my players away and go for the really tight ____ category."

I just don't think our league has enough separation yet to start seeing trades.