I've downloaded and played around a bit with beta 5 on my n900 (Maemo OS). For the most part it works just fine, if a little slowly. Two issues in particular that I would like to see addressed if at all possible:
1. As I recall right-clicking an object will pick it up. However there isn't a way to right click with a touch-screen. Some Maemo programs can do this by having you hold down a key on the keyboard while clicking to do a right-click. I'm not sure if this is already part of this and I'm just not finding it or what.
2. It can be a little difficult on the touch screen to get the top menu bar to show, and to then select what you want when it does. Maybe add an option in the config to set it to always show, or maybe a key toggle. Again, something that may already be in the beta that I just don't know about.
It's awesome so far though, so thanks to all of you that are coding this.