Actually, if style play and coaching lineage is anything Igor might have a better grasp than Walton on how to run the offense. I do not want to see Walton run a lot of what he did prior to LeBron in LA because it's fairly close to what Dave Joerger ran 2 years ago. Not as space crunching but there was a lot of jumble in the paint. This team needs to space and pace, not run 15 seconds off the shotclock looking for cutters every single play.
It's been crickets since this was announced up until the latest batch of news with Walton denying even writing the foreword for the book. If there's any truth to that denial it probably kills any ounce of credibility Tennant has.