I don't have any plans at present as I think the channel concept covers at least some of the use cases, as long as people can create multiple channels. You'll notice Player FM keeps playing through the channel once it finishes an episode, so it's a kind of playlist.
What kind of playlist did you have in mind?
for instance, If i wanted to listen to a particular gaming podcast, then a particular science podcast, then back to a gaming...
Got it. You'll definitely be able to do that with a custom channel.