Yeah. I'm glad they kept him as well. Gunther was also a great public personality for Sprint.
Dr. Saw has specific expertise of Sprint's 2.5 GHz (and its overall network) that's really important for network integration.
My understanding from what I've read/heard is that T-Mobile's original Day Zero plan and plan moving forward was much more ambitious in terms of integration. However, given the COVID-19 Pandemic, they've decided to take a more conservative approach post-merger for the next 90 days. We'll see how that changes in the coming weeks/months.