The planning of building through the draft has experienced two major shifts? What were they? Bringing in more NHL talent? They had almost none on their roster last year and then they brought in all these guys and they're still bad because they were always going to be bad. Anyone with a brain and eyes could see CHI was always going to be a bottom-5/6/7 team this year, even if things had gone well.
He added 5 more mostly redundant actual NHL depth players (not just the main two) compared to the previous years and instead of trying to keep them all, he showed it was better to just lose guys on waivers rather than have to pick them up on waivers. It was combined with a focus to maximize AAV to use in trade midseason year 1 and 2. It didn't work out very well. They're under 5 right now and no gm plans to waive their own contract like AA. The cap is hardly restrictive but he made a major change in managing the contracts, almost polar opposite of the previous 2 years, it wasn't planned.
The other shift was the emphasis on picks. Trying to manage 10 in the first 2 rounds in 22' and 23' and 22 overall (19 forwards) was a ridiculous idea as few clubs have ever really done well when they move away from just focusing on getting a few right. Shooting down to 3 in the first 2 rounds was a major shift. I think the Greene thing scared them straight on the previous approach. I've been ranting about how wasteful in time and assets it is to have too many picks clogging up everything since this thing started.
The coaching thing (including baffling decision of hiring another rookie coach) isn't a change imo, it was just part of the learning curve for a gm who hasn't done anything yet.
The good news is he didn't wait another year to make the shifts above.
He definitely hasn't figured out how to use players like Jones to create the culture that's useful for long term development since points are out of the question for a while yet.