The Question of the Day is a way to facilitate community discussion to help members ponder the unanswered questions of the world that are somehow relating to the hobby. Questions are many times open ended and up to interpretation. Feel free to post your thoughts in as much or as little detail as you’d like.
Helpful Considerations may or may not help some people focus their answer, these are blurred to not bother those who have their own ideas.
I want to see a rock type eevolution who would be the second one to use accelerock after lycanroc. The name could be soemthing like quartzeon.
And it’s complementary can be a flying type eevee who has a signature ability of activating tailwind on switch in. (very much helpful in doubles). It’s name could be some aveion.
So rock and flying it is for me.
quartzeon can be a physical attacker and aveion can be a special one.
Also for evolving eevee into quartzeon we must have a fossil in our team when eevee has 85% above friendship.
And to evolve it into aveion we must have a route 1 bird in our team when eevee has 85% above friendship.
If both are in team then eevee would evolve by taking the one which has higher level in our team. Meaning if both route 1 bird and a fossil in our team then if fossil has higher level eevee evolves into quartzeon else it evolves to aveion.
Reminder to everyone that in the massive Pokemon leaks that happened, it was confirmed a Flying type Eeveelution was planned and designed, but was scrapped because they thought it looked too similar to a fan-made one they found and they didn’t want to have to deal with accusations that they copied or stole it.
and Cementeon 
and flying 
it is for me.