The XE code is just the EE code with a few features disabled.
Therefore, feature requests of the RDBMS belong in Database Ideas
Now, as far as XE Installation goes, that would belong in the Oracle Database Express Edition (XE) forum. But, to keep things clean, I'd recommend posting a new thread of each new recommendation.
eg There was once a thread about upgrading 18c XE to 19c 20c XE using the PDB unplug-replace code-plugin method. Having the Installation wizard handling all of those steps would be very nice.