Most games, download the entire content and then install it. Unzipping each package individually slows down the download a lot.
Some people (like me) don’t use all the content included in MSFS. I would like to be able to choose between a minimal installation (only a few planes, no activities or handmade airports) or a full installation. This would reduce the load and bandwidth usage of the servers.
The installer consumes an absurd amount of system resources. I know you can limit the FPS, but this should be the default.
The installer has stability issues almost 1 year after release.
I think fixing this is far more important right now than the next world update.