I'm just braindumping some ideas from a conversation with tomhukins last night. We both think that the user interface on Nodes To Consider and the approval nodelet could be improved.
Considerations can be either delete requests or edit requests. They can never be both. In that case, why allow approvers to vote 'delete' against an edit request, or 'edit' against a delete request?
We thought that having a list of preset reasons for deletion would be a good idea. This would be available as a drop-down menu. This would encourage approvers to think about precisely why they want to delete a node. There could always be a catch-all 'other' option allowing freeform text, but this would be more likely to be 'keep' voted down.
For edit reqests, why not get the approver to do the changes and submit his/her edit for approval? This could be displayed in NTC in its raw pre-markup form, either with changes highlighted, or as a diff listing.