No crash bugs are currently known, so if Remote Buddy crashes on your 
machine, any crash log you can provide would be greatly appreciated. 
Usually, you can find these at ~/Library/CrashReporter/

We recently had a complete site relaunch and the huge changes under 
the hood seem to have exposed a few bugs in the forum code that 
previously had no negative effect. Thanks for reporting! I fixed it 
right away.

Regarding your questions:

1) + 2) Right now, the Launcher can't be customized and all buttons in 
the Launcher lead to the same functionality everwhere.

3) + 4) You can create your own, custom actions by selecting "Custom 
actions.." in the action popup at Prefs > Mapping - or - alternatively 
define your own actions in the Behaviour Construction Kit (don't 
forget to check the "Global" checkbox for the actions you create there 
and they become available under Actions > "Miscellaneous"). For less 
frequently used actions, you can put them either in the context menu 
of the respective application - or - if you checked the "Global" 
checkbox for the respective action - anywhere in Remote Buddy's menu, 
which, in turn is accessible either by the "Menu" button in the remote 
control module. Or directly via the "Menu" module.

Step by step instructions for creating both custom actions or global 
actions via the BCK can be found at these places: 
http://helpbooks.iospirit.net/remotebuddy/english/howto.html#ExecuteAppleScript 
http://helpbooks.iospirit.net/remotebuddy/english/howto.html#AddGlobalAction

Regarding the "ipod control visuals": please tap the "Gesture" button 
at the top of the Remote module to switch to the new Gesture mode. 
It's much more intuitive and you don't have to look on the screen to 
control your apps.

I hope these answers were of help to you. If possible, please send in 
the crash logs of the crashes you were experiencing. If there's a 
crash bug, I'm always eager to identify and fix it as soon as possible.

Best regards, 
Felix Schwarz