Well on my SteamDeck I wanted to install Portmaster for Adblocking and network filtering, and also wine because running Windows apps with a click on the Desktop > Opening Bottles and setting each one up before, Also wanted to switch KDE for Gnome because KDE sucks on a touch screen big time where Gnome is much more touch friendly. Also wanted to install neofetch as well but just ran it as a script to get what I needed. Yes I can disable the read-only and do it all anyway, it’s not really locked down but because SteamOS doesn’t respect or honor changes they’ll just undo it whenever I update.