I've just tried the new mining systems for the first time - never got to give them a go during beta.
I must say, I've been pleasantly surprised. I'd expected to have endless frustrations with HUD modes, fire groups, etc. The reality was rather different!
- Planetary ring only needed probe-scanning once, full stop. When I came back to the same ring a second time, hotspots were still highlighted.
- No HUD mode switching required during mining (managed to avoid any aggro pirates, so no dogfighting).
- Only two fire groups required during core mining (one for ping+prospector, a second for abrasion+collector).
Very enjoyable, flying through a darkened planetary ring of asteroids, switching between normal and night vision, eyeballing core-crackable asteroids to save on prospectors, getting the charge strengths just right, pinwheeling around a broken asteroid in VR as I hit all the surface deposits with the abrasion blaster... and dat BOOM.
I've certainly got my do-not-like list about FD's over-complicated user interface choices for some of the things they've added. To be honest, though, I can't bring myself to complain about asteroid core mining.
As for the multiple layers of "scanning probing" mentioned in the OP regarding mining, it seems pretty sensible.
1. Go to unexplored system. Scan to find ringed worlds. Only needs doing once.
2. Go to planetary ring. Scan to find resource hotspots. Only needs doing once.
3. Go to hotspot. Scan to find valuable asteroid.
4. Go to asteroid. Use prospector limpets to find fissures, etc.
Steps 3 and 4 are something only miners care about, and they require mining-specific equipment to do.
It took me a run or two to get familiar with it all, but it feels like second nature now.
So I can't really agree that mining is particularly "convoluted". Core cracking is actually pretty straightforward, and is more engaging, more profitable and better looking than traditional point-laser-at-rock mining.