I would like them to try other series, although if they did it, they would probably be overflown with suggestions.
Based on what they enjoyed of DBZ, I think they would enjoy OG DB more than Super; but Super is more in line with the game and has characters in it that aren't covered by DBZ, so it is likely they will continue with that. However, they should watch the movies and skip many episodes of the first 2 arcs.
I think Dead Cells has a reasonable chance of being GotY 2018. Several strong contenders, but no other one has less dissidents. Jeff and Dan with pull RDR2 down, and during the podcast both Brad and Jeff admitted they didn't played God of War more than a few hours in.
I have heard nothing but praise from the crew for Dead Cells.
I would recommend some of the Telltales adventures (before they get de-listed) or similar narrative adventure games like Until Dawn, and Life is Strange or Valiant Hearts. If you are concerned with the controls, take them and let her do the decisions...
I am going to put my tokens in Spec Ops: The Line, for not being mentioned a lot, and being the smartest story in a shooter I have seen.
Is it the greatest story ever? Probably not, and I lack the experience in many of the other games people have mentioned here to argue where it lands, but it is one of the only (if not the only) game that contextualizes your actions and pulls the rug under you in a genre that is plagued with "you are the good guy, the bad guy has a MacGuffin, here is a gun, everything that shoots at you is bad... now go."
There is a lot of space wasted on the main page on "Continue watching" (which doesn't work well) and "This day in Giant Bomb History" (which is interesting from a trivia standpoint, but not much else) features and very little/no space dedicated to articles/forum/podcasts/not-video related content.
At the end of the day, I use other means to access video content (youtube or mobile apps), so I use the page mostly for the other content. As such, it is a pity seeing that content relegated to secondary menu options.