I agree, lower system requirements are preferable. I have a strange issue though that I built this version for .Net 4.0 without errors, but in my tests it only works properly if 4.5 is installed.
Madi has been in touch with some other suggestions, such as allowing custom fonts (apparently Polish users among others have their own character sets, as few people actually use the built in international character set, and they have even written patches that install their own font in the previous version of AtasciiView).