Whoa - you sure do like tinkering, and are not afraid of text editing! The first person who likes the macro system at first look... You've definitely come to the right browser!
Although don't get too excited, it's not all just sunshine, there are also some clouds, but oh well, nothing's perfect. And the wiki and homepage are for the most part badly outdated, so the best source for info is the forum here.
Regarding those more sublevels in the menu - no prob for people like you!
Menus can be tinkered with just as freely as toolbars
And there are usually various methods for the same goal, for buttons and menus and sortcuts, either by editing cfg files or by macros, or changing default settings or just profile settings etc.