I am opposed to shortening the waiting period for new packages.
There are plenty of examples in which members of the community have provided feedback on the name, and then the author has chosen to change the name.
Here is a single randomly chosen example: #15489
The author originally suggested the name
GRPF.jl. The community provided feedback. One community member suggested the name
RootsAndPoles.jl. The author and the community engaged in a discussion. The author decided that they liked the name
RootsAndPoles.jl. The pull request to register the name
GRPF.jl (#15489) was closed. The package was registered with the name
If you go through the history of pull requests on the General registry, you will find other examples.
Keep in mind that the three-day waiting period only applies to new packages. New versions of existing packages are merged very quickly (within 20-60 minutes).