I think having multiple font's to read in Japanese will help on comprehension. As an example I run Windows XP at work and OpenSUSE at home, the appearance of kanji is somewhat different as it can appear more or less bold between systems and even browsers(I also like to do this on my phone before going to sleep). So while at work I have plenty of free time playing with the core words flash cards and doing very well, but then I get home and suddenly I am doing not so well at first until I pick up new aspects to remember on the kanji being used.
Once I realized this I now tend to try to use different systems as much as possible but it would be great if I can at least edit the deck or some kind of other setting so I can try in other font's. With that said I am sure there's a browser plugin that I might try to locate that can do this as well by changing the CSS values but I don't have much experience in that or if it will even work.
As an extra example I've known how to read kana to some extent for quite some time, even if I don't know what is actually being said. But when I am looking at pictures that have some kana in them using a modern/stylized font it can be more difficult to read some of the characters.
