I'm considering upgrading the drivetrain mounts in my 2007 WRX.  The car is stock and I plan to keep it mostly if not entirely that way.  The OEM mounts are very soft which is why I consider the change - even in leisurely daily driving there is a lot of drivetrain lash/movement which, besides the annoyance, makes smooth driving a trying task. 

I'm not a believer in the idea of Subaru "weak trannys" blowing to bits by a strong wind.  However part of a mounts purpose is of course to absorb shock.  Given that its a 4WD car with a let's say satisfactory strength transmission, what is the real level of concern for added drivetrain stress?  Part of me thinks the lashing is worse than a lack of movement.

Almost forgot about this post!  No replies? It is a serious question; perhaps I didn't explain the concern well enough. I'm concerned with the possibility of extra load on the drivetrain using stiffer mounts. Or should I not be?