for 2 main reasons:
First
We are starting to use more and more the visualization generated by Windchill with other software, extranet ...
Today people are used to see movies and pictures in "full HD", and are a little bit disappointed with Windchill quality.
Second
In Windchill 10 the size of the thumbnail is almost twice the size it was in 9.1, but the quality is the same...
In 2012 we would expect to have "HD" pictures everywhere, and not a 2ko picture as a thumbnail.
