Thanks for the MoTown link -- sounds like it will be a good idea, but it'll have to wait until I have some big chunks of time to try to make it look like my existing layout.
I think I understand what you're talking about with the theme switcher and the focus problem. I'm not sure I'd want to mess with tabindex or a left sidebar, because I think content should come first. A regular visitor would only need to set the theme once, and in subsequent visits I think they would be more interested in visiting post links or making comments than in switching themes again.
I think I understand your theme link list idea -- it seems like something obvious I should have thought of. I don't mind it not being drop-down because I don't have that many themes.
I went to your workshop site, and I didn't see the theme links anywhere, though.
About themes vs. styles -- I really only use the theme switcher to address the variable width problem -- I currently have one version of my theme designed for 800x600 res, and another for 1024x768. I've thought about adding larger and smaller versions, too.
If I could do all that by switching styles instead of themes, that would be nicer -- after all, the only differences (I think) are in the CSS.
And then there's the monthly archive plugin, found here: http://www.oneofthosedays.org.uk/projects/plugin-archives
I understand tables can be a problem for some browsers -- maybe it's as simple as adding some alt text or something? --Okay, that seemed too simple so I looked it up and found out about WAVE
which is an accessibility validation tool. Looks like this plugin is a properly set up data table and not a problem for accessibility.
On the other hand, I found out I need form labels.
I do wonder why the plugin puts a list of all the monthly archive links in the head of the document...
Gotta go make dinner now...