You like dragons?
If you mean like a music theme then YES PLEASE! It would be pretty cool for the starter pokemon to have a music theme!
A common theme, like how every starter have some sort of musical theme... or how every starter is a *insert object/idea here*... yup, that kind of theme! I wonder how musical the starters could get by itself, by the way.
(See the above reply)
I'm going to answer multiple topics.
Would you like the next set of starters to have a common theme?
...? What kind of theme? They already share a common theme. I just want Nintendo to stick with tradition lol. If you mean musical theme, then that would be rather interesting I guess.
Assume the next game only has one starter.
It would depend on the Pokemon released at the time. It'd have to a unique Pokemon like Eevee. In fact, Eevee would actually be a perfect candidate.
*is not sure on "common theme"*
Eevee, huh? Maybe this would be time to leave the final evolution to the player's hands... but Eevee's also pretty old.
Hehe, but that's something not to worry about, right?