Forum:Characters showing up less & less.

I've been avoiding the current season entirely so I can bingle watch it once it's over, but I have been checking the wiki, & I've noticed that characters who used to appear regularly in almost every episode are showing up less & less, relegated to minor roles & cameo appearances. How does everyone else feel about this?

Probably an unpopular opinion here, but I always hoped Bubblegum would get her own spinoff series. Marceline is popular, but she doesn't seem to have been in this season much either.

http://images4.wikia.nocookie.net/__cb20091227230730/adventuretimewithfinnandjake/images/archive/b/bc/20100401212842!Wiki.png