No, fans don't like guys being shifted around, well, speaking for myself anyway. I understand it early in a season, due to new players, injury, etc, but it ultimately pisses me off. A lot of coaches tend to over manage there top lines when they hit a lull, ultimately going back to what worked in the first place, dumb. There's still some good coaches out there, lol.
Then again, if you look at comments from team sites, etc, hockey fans are extremely stupid, especially after reading their line suggestions. GROSS!