My own thoughts.
The initial honk followed by searching the scanner results sounds interesting, but sounds like it could take up far more time than it currently does. I'd need to see it in action on a big system (lots of planets & moons as well as bodies at long distances from the primary star) to decide.
However, I'm personally not happy with the concept of the fire-and-forget DSS probes. I'd prefer that the probes travel to the target body, scan it, and then come back to your ship for refueling and reuse. Basically, you'd only need to synthesise more probes if you jumped out of the system before all your probes came back, or if they had to travel too far to the target body and ran out of fuel before they could come back to you. That would greatly reduce the number of probes that you'd need to be carrying and reduce the amount of synthesis you'd need to do.
What about the probe's range? If a body is out at the 250,000+ ls range, should a probe even be able to reach it before running out of fuel?
Also - this business about "skillfully" aiming the probes to scan specific areas of the target planet? This idea doesn't really appeal to me at all, as it has all the hallmarks of being a crapshoot instead with my skill level. It's supposed to be the 34th Century - we should be told that this planet requires 5 probes to scan completely, so we just launch 5 probes at it. Although considering how stupid collector limpets are, I'm somehow not surprised that a group of probes needs to be told how to cover a planet for scanning...
Would it work better if a single probe could scan an entire planet, albeit very slowly as the probe doesn't move very quickly around the planet, but skilled players could arc more probes into different areas on the planet (e.g. the other side of the planet) to greatly speed things up by starting additional scans in different areas, meaning each probe will have to move far less distance to cover areas not being scanned by other probes? It's a subtle difference to what's been proposed, but makes sense to me.