Honestly I'm a bit shocked they proposed this change at all. It makes me wonder whether or not FD really understands the exploration gameplay loop.
I'm also a bit surprised so many people seem to like the proposal. To me it seems so much incredibly worse. Like bad enough to make me consider giving up Elite exploration, that's how much I dislike it.
The reason
I'm (mostly) positive about this change, is because given the choice between sitting around for 30 seconds doing nothing while waiting for POI sites to resolve, and flying out there and probing the world myself, is that I'm
already doing the latter. I use the FSS to find likely candidates for "interesting things," and fly out there as soon as I find one, and search for other worlds visually along the way. Sitting still and doing nothing, as I waited for the timer to finish swirling, was one of the reasons why I didn't do much exploring pre-FSS in the first place. Seriously, I
hate forced idleness in video games.
Personally, I would've been fine with long resolve times if:
- I could use the FSS while throttled up.
- The results would be shown on the navigation panel (left) in the cockpit once resolved, above the planetary details from the system map.
- I could use the FSS while throttled up.
- The results would be shown on the system map, above the planetary details.
- I could use the FSS while throttled up.
Did I mention using the FSS while throttled up?

The FSS
can be used on the move, I've done it by using the gravity of gas giants to slow down the braking effect of throttling down. It's more difficult, yes, and changing SOIs while in the FSS can be problematic, but I'd much rather make that choice myself, rather than having it forced upon me for no good reason.
I do think that once again, Frontier's "one size fits all" approach is the wrong way to go. Getting quick results on the probability suits players like me who don't mind uncertainty (though I think <60% is
way too high for the "unlikely" threshold, I'd prefer <30% myself) as long as it gets us moving, while still allowing players to wait for the exact results. Combine that with the ability to use the FSS on the move, and being able to see the results outside the FSS, and you'll have a lot of happy explorers on your hands. The more options the better IMO.