Originally Posted by IcyVeins
A little bit off topic:
How difficult would it be to support path-browsing in main menu (file selection) or at least a recursive collection structure? At the moment it is really hard to separate the files (for example university courses mixed with novel categories etc.) and without actually knowing anything about KT-OS I hope that it is possible through class-patches.
In principle, it is possible - pretty much everything is possible, as long as it concerns the Java parts of the Kindle. But it would require a major effort, because one would essentially have to rewrite the entire home screen. And with the introduction of aggressive code obfuscation with firmware 5.1.*, it has become more difficult by another order of magnitude. Say "thank you, Amazon".
So, it's not going to happen anytime soon, if ever (at least not from my side). Your best bet is to use collections, the filters, and the search box. Sorry.