Does MacPorts have anything like Homebrew Cask? I know it's technically a plugin/addon, but it owes its existence to the Homebrew tooling and ecosystem it's on top of.

The ability to very easily install full GUI apps, or closed-source ones, is absolutely indispensable for automatically configuring Macs in many large environments, especially those (like a former one of mine) that heavily used Puppet for provisioning.

If MacPorts is lacking in that "umbrella package manager" functionality, I'd be stuck using both it and cask if I switched (and, given my positive experiences with Homebrew core and cask, I have no plans to).