"The only alternative then is we deprecate -32bit and -32bit-devel and merge the final packages, so that its a 32-bit + 64-bit package in one."

true. but does not everyone expect wine in the path / menu after installing it?

then why not make wine-32bit a dependency of wine?
ran into the same issue in 2018 :-(

Could you add the python plugin to it?
See https://community.kde.org/KDevelop/HowToCompile_v5#2._Get_and_install_plugins_.28optional.29
Note: there's also a php plugin.

it was just me expecting the same default settings as in other distros :-)