Yes, it does not have to be a big deal, we only have to change pilot's attitude and judgement - a bit like changing drivers' attitudes to wearing seat belts or drink-driving.
Most pilots already accept the real need to be stable on approach - the days of 240kts to 4dme etc are well behind us, Being unstable should lead to a go-around without punitive consequences, and this message is slowly getting through.
On landing, none of us want to slam the aircraft in every time, but a long float is a bad habit. (I am sometimes guilty). Chief pilots could mandate that a long float should lead to a baulked landing. A baulked landing should be seen as a lesson learned and a positive contribution to safety, in the same way that other go-arounds are seen by most enlightened chief pilots.
If it was freely publicised that FDM would be used to flag touchdowns outside the touchdown zone, standards would gradually improve.
Another way to introduce incentives to change behaviour would be to publish league tables, (or even offer modest bonus payments), for stable approaches, touchdowns within the touchdown zone, and, say, three manually flown approaches every six months. Pilots' standards would improve !