My friend and fellow MVP Leslie Vail has taken a cue from Frank Hamelly and has added a bunch of suggestions to MS Connect. Please take a look and vote for them to them help improve GP.
Do not automatically unapply other documents if one is voided: 921385
Allow changes to the Amount Paid field on the Edit Payables Check Batch window: 921350
Add a [Mark/Unmark All] button to the Edit Payables Check Batch window ID: 921336