Well I was going through all of the themes a few days ago, and found it hard to find one that had what I want. Some of the things that the designers did were not the wisest.
I settled on the Ocean Mist theme, which I think is very nice, but it has two flaws that just don't make sense:
Font size is insanely small
For some reason the date and name of poster "invades" the title of the post from the right side, causing the post title to look kind of awkward. The flow of a readers eye is left to right, so it doesnt make sense to have the direction of their eye as they are reading the post title be interrupted in the middle of the title by the date and author.
As I said, I like this theme, but it could have been better with a little common sense.
There was another theme I also liked, but the developer had pages listed across the top, above the picture, and then had a "Search" box which covered up part of the page names that one has added.
WordPress, in its FAQ at http://faq.wordpress.com/2006/06/12/can-i-change-my-font-font-size/
comments that "We cannot alter a theme to accommodate your choice of font size. Please bear in mind that if we alter a theme for you then that alters the same theme for everyone else. They probably won’t like that happening."
I may be wrong, but I would dare say that just about everyone who uses this theme would probably prefer a larger font size.
There was a previous forum poster who had the same problem with Ocean Mist font size,
and was for some reason unable to change the font size via html. I was able to change it, but one has to go through and insert the html code for every single paragraph. Its a bit time consuming.
Is there any way to give feedback to the people who develop the themes?