I disagree. Even with the fact that the PT used a lot more practical effects than many give it credit for, the CGI usage was warranted for what it was used in, and it excelled in those areas.
Take, for instance, Yoda. The CG Yoda looked like a legitimate living being, rather than the puppet Yoda's rubber skin and limited mobility. Now this isn't a slam on Frank Oz' puppetry at all, and I will be the first one to protest if they change the Yoda in ESB and RotJ to CGI in the next re-release, but in my opinion, the CG Yoda was better in every way, visually.
Also, anyone who tells me that these scenes would have looked better without CGI are kidding themselves:
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CGI is here to stay, because Star Wars Episode VII is coming in 2015, not 1977.
Darth Vegas the unwise...