Just to pick up on this topic, I must agree that my views have changed over time. I tend to be a harsh critic but there are a few albums I have reviewed, which I'd give more stars to if I had a second chance. In particular:
Caravan - In the Land of Grey and Pink - gave 3 stars (silly me!) want to give 4 or even 5;
Yes Relayer; Wakemans' No Earthly Connection & Six Wives; and Mahavishnu Orchestra, Inner Mounting Flame - I gave 4 stars to each, on reflection should have been 5;
on the other hand there are a few that I felt charitable about at the time, but now I think I'd drop the rating. These will remain nameless....
There are also a few typo's that I missed!