Its been this way since version 1 of DS and your not the only person that would like to see it added.
At this point if you know anyone who is willing to attempt to write their own plugin for DS to accomplish either or both then I recommend you point them to the DS4 SDK.
Other then that, there is a unique hair plugin in development called “Look At My Hair” that will not have Dynamics for version one but the developer is hoping to add it in a future version.
WIP thread for LAMH - http://www.daz3d.com/forums/viewthread/381/