I really like Sandler.
I think it was '16... '17, when I first noticed him on the Rangers broadcast. There was a time they'd turn over the PBP to him in like the 7th Inning to do an inning of work. IIRC, they give him the option to do another inning here and there. Nadel and Hicks really brought him in and helped him. He has credited them for their willingness to bring in this kid.
I think Hicks has said that Sandler came in and really wanted to learn everything and worked hard and was respectful. He painted Sandler as this guy who had a respect for Nadel and Hicks and what they could teach him, while giving them insight on how they could engage a the next/younger audience.
If the Rangers can really lock him down, he could go down as one of the greats. I grew up with Vin Scully who did PbP for the Dodgers for decades and was associated with them for 66 years.
Sandler has been with the Rangers for like 12 years and whether it is Radio/TV/Both... he could take over for Nadel... Raymond... or both.