First of all: I am really impressed by the app and we are still at version 1.x. It is blazingly fast and very powerful. Good work.
One thing, I miss, though, is an option for cycling through Tools without the need of going back to Library.
That is: When you look up a word in a dictionary, it would be such a great thing, if it was possible instantly to cycle through one's Greek dictionaries etc. This would enhance word study quite a bit.