I'd certainly recommend a trip on them in service, if only as a one-off experience to see just how rough that trackwork is.
Isn't the issue in part due to the trains? I remember an account being added to the "Future of the Island line" on this forum regarding lateral movement of the bogies, and the need to damp them. The train is running fine, then suddenly a graunching noise, and the carriage sways.
I plan to go later in the year - probably October, when the sun is lower, less crowded, less expensive, provided lockdown isn't reinstated.
From the Island Echo,
Summer 2020 - first 484 delivered
October/November - more 484's delivered
Winter 2020/1 - partial closures to allow engineering work to take place
Febuary 2021- last 484's delivered
March 2021 - Last 483 decomissioned - their wording, and line closed
May 2021 - Line reopened, new timetable with 484's