Great suggestion! This is already possible in desktop mode but may be a bit slow due to the amount of bandwidth used for sending image information. A dedicated "Touch pad" profile as you suggested should work well.
I've added this to the request list and a Touch pad profile will appear in one of the next releases. There probably won't be time to get it in for the next release (due within two weeks) but hopefully the one after.
Its hard to give an accurate estimate of when each software release will be available. My best estimate is that the release after the next one will be early June. Hope that gives you an idea.