I know what you mean. I went through many nice fonts but that just looked terrible scaled down because they weren't clear.
I took another look through and found some Celtic founds as well. I'll make a list of them scaled down to the size that I think is good for AGS. I'll include those ones as well. If I can find a decent font, I will convert it to SCI. I did that with Lady Ice and it turned out not bad even though I have to agree it doesn't quite match the genre.

Ok. Here it is:

Just my thoughts. The Art of Illumination doesn't have any uppercase characters. So that would be a problem for that font and it looks pretty heavy too. The last font there is a little too heavy as well but it might be able to be cleaned up. However, I think one of the other fonts would be much better. They are lighter weight and more readable, imho.
Which one do you think that you could stand staring at for hours on end?

Any of them? BTW... If I go with a different font, I will donate the Lady Ice SCI font to the AGS community.