1. It can be remake to very simple and tiny file manager.
2. Those wget pop-ups are very disturbing, it should be in tray.
3. I don't need installation confirmation in window. There should be Appsbrowser's log window.
4. There should be repository mirror list with ability to change and add new one.
5. There should be ability to change default extension directory in Appsbrowser.
Nice ideas, but just ideas.
Can be quite contraproductive to add and add features. Sooner or later you end with some overloaded stuff nobody want (and can) use anymore.
Another aspect it the needed manpower for creation. To express an idea may need 5 minutes, to create a working GUI feature for beta release could easily mean 50 working hours including all the cross tests needed.
For each single feature - so in total that could be 250 working hours for your five little suggestions - do you want to spend that amount of working time?
My opinion: a repo mirror list would be nice if someone would be so kind to code and test.
All the rest doesn't seem as important to me, that it's worth the needed working time and maybe it would even destroy the simplicity appbrowser can be handled now without the need first to do two hours manual reading.