In regards to renaming packages.
Unfortunately, you can't rename the package once it is already exported, renaming the archive wouldn't change the package name itself. You can try to rename the package when it is still in the dev environment in the SQL console changing the name of the corresponding record in the SysPackage table. We don't recommend to do this, however, if it is really needed you can backup the database, change the name, generate the source code for all and compile all. After that, if while testing the functionality no errors would occur you can export the package and transfer it.