However, the core problem with Windows software is there isn't a primary software repository for all approved and tested software, like there is for *nix platforms. Ideally that's what needs to be fixed first before yet more client-end installers get created.
To fix this, based on the current landscape, all third-party client-end installers need to support all existing third-party repositories. Even better, everyone agrees on a standard JSON format (or whatever) for their repository manifest and all third-party installers understand that. Then just like Linux et al. all you have to do is add the new repository URL to your installers config, and all the packages advertised within are immediately available.
It seems really simple to fix - but people have to co-operate.