I definitely agree with you, but I don't think that's sufficient. I think at larger companies it would be helpful to spend a day or two every quarter having a scrum increment meeting. The SI would let scrum lords and scrum masters plan what experiments would occur during the next quarter.
It would be like scrum of scrums in LeSS or PIs in SAFe. But instead of focusing on what work would be done, it would focus on how it would be done, and what changes scrum masters would make.