I used to sell Linn gear and I agree with P1s1. The Tukans are certainly musical and definitely possess the toe tapping, pace & rhythm thing that Linn is famous for, but disappearing into the room just isn't one of their strong suits(at least relative to other speakers where that is more of a strength). Pulling the Tukans out into the room might help, but you'll probably sacrifice a good amount of bass in the process(subwoofer time), so there are trade offs(as always).
I suppose it's possible your taste in musical reproduction may be changing as you listen more and/or hear other systems, so if this "disappearing" aspect starts to get in the way of thoroughly enjoying the music it might require looking at other speakers(i.e. Triangle, Coincident Tech., Silverline, Soliloquy, Joseph Audio, etc.) that more readily pull off the disappearing act. Otherwise just have fun experimenting with positioning and enjoy the Tukans for all the other positive sonic attributes these little gems possess. Best of luck.
Tim