The real advantage in such a feature (at least for the templates I suggested) would be that many considerations could be avoided

I highly doubt that. There have certainly been many monks who have had multiple nodes considered for the same fairly simple problems and have had several private /msgs regarding the problem sent to them but still manage to produce nodes with the same problem for quite a while. Many nodes would also still get considered simply because the author doesn't happen to be around soon enough after the problem is /msg'd to them.

Worse, I don't think "have everyone send a private /msg instead of considering" scales at all well. Perhaps you plan to implement the "delete all 200 private messages I got that tell me to add READMORE tags for this particular node" feature? :) Sending a private /msg instead of considering is often a good idea. But there is a balance to be struck.