I’d love to see a modern take on Cannon Fodder, as well as another entry in the Desert/Urban/Soviet/Nuclear Strike series.
Lastly, there was a very fun demo/mod to Sensible Soccer for the Amiga that set the match between UK and Germany, and replaced the ball with a bomb that would periodically explode and eliminate any nearby players. I’d live to see a modern-day version of this, honestly - just some goofy fun!
…and yes, I am fully aware of just how old this makes me all sound.
In a similar vein to another commenter wanting a pre-Paradise style Burnout; I’d like another NFS:U entry, but honestly am so over ‘open world’ racing games… give me a good ol’ fashioned menu any day of the week!
Super Mario RPG and Chrono Trigger, I think strike a good balance regarding random encounters.
On the other end of the spectrum would be something like the Front Mission or Final Fantasy Tactics series - where the narrative is all handled through set battles.