Any modification is one of personal choice. A MOD that looks "good" on car "A" does not necessarily look "good" on car "B". It's strictly one of personal preference and what "look" you are trying to achieve when finished. You are entitled to your opinion and I respect it along with the opinions of all other forum members.
Think we all know what Clint Eastwood said in one of his Dirty Harry movies about opinions.
It should be noted that there are now over 1200 views to this thread which appears to indicate much interest in welts. From speaking to Mr. Mike recently he told me most of the high-level of interest in welts is coming from people who are on the various PT Cruiser forums. From my personal experience, may people from my area PT Cruiser Clubs who see the welting for the first time are amazed at how it greatly enhances a car's interior. They are futher astounded at the low price and feel welting is an outstanding "bang for the buck".
The really nice thing about welts is that if you try them and don't like "the look" [B)] they are easy to remove without any damage to your car. [8D]