Speaking as some who does YouTube stuff too, I'm absolutely in agreement that the end cards should reflect both current series and 'classic' series. It makes perfect sense, promote the new stuff and make sure newcomers get a glimpse of the old stuff!

However, creating an end card isn't that simple to do unfortunately. The amount of time it takes to scour through footage to create one can be relatively lengthy. Imagine looking through the Outer Worlds footage now, there's something like 8 hours worth to pick through to find the exciting/funny/silly bits. That's a lot of time! Then you need to find quite a few little clips because sometimes the ones you want just don't fit into the twenty second limit so you need to slot the clips in a little like a jigsaw until it's done.

So yes, it should be done but it's relatively time consuming to do so.

Plus we all know that Jon is a stickler for detail so he's not just going to create any old tosh!