It would be a great feature to be able to place an iMate on an iFeature.
For instance I'm modelling small well's with iFeature's on a concrete surface. The wells are to be covered with aluminum lids and it would speed up my work a whole lot to place out the lids with iMate's attached to the iFeature.
As it is now I have to manually place the iMates and it takes a lot of time.