Based upon the comments of many people doing upgrades to 8.5.1 It seems like opportunity still exists for the install experience to be made a more positive one. Amongst the areas I believe need improving:-
Very simple...Domino updates the registry to enable itself as a Windows service--when selected during install. Give admins the option to "Add '-jc' to Windows service Registry value" or "Enable Java Controller with service" option.
Otherwise, if admins want to enable the java controller, then they have to remember to ...
If Quickr connectors were a Lotus Notes client install option (which could be scripted) that would simplify and reduce the administration required when upgrading or rolling out new machines. Imagine if Sametime (integrated version) was only a separate installation. That would hurt.
User settings migration
When you install Domino on a Windows platform machine, the Domino program directory is not added to the server's path statement.
It would make it alot easier to run nsd.exe, and nserver -c commands (for batch files) if the program directory was already in the path already.