I was thinking about the odd opensource apps i use and the worst things about ones i use most are:
- None or lousy mechanism to update to latest version
- Installer/app puts stuff everywhere and doesn't wipe up after itself on uninstall
- Installer installs app plus some adware
I believe the sandboxing that project centennial does provides solution to issues 1 and 2, and users will trust 3 not to happen from windows store.
About (2). No. Remember, a win32-store app is a Full Trust app. It can write ANYWHERE on the system it wants to. If it stays within appdata and the registry (in other words, inside its sandbox), it will be fully cleansed on uninstall.
You are right but phrased it slightly wrong. The appdata and the registry it can write to are copies. The writes and reads are redirected. Other folders it touches are not redirected, that's true.