The general idea & functionality is striking, but 3 most annoying issues have to be resolved
(1) on each visit of a Visio graph a "refresh" happens which seems to take ages and always ends with an error calling for a "re-read".
(2) it seems impossible to fix or save the zoom & focus of Visio org charts being created
(3) for org charts there is a limit of 150 elements. The related error came up only once after hours of usage with larger org charts "updating" forever.