Split into 1.e4 vs 1.d4 only for tournaments

The difference between e4 and d4 is so important I think it deserves it's own themed variant like preference options. Name it in the seek feature or hourly tournament features. I know there are themed tournaments but this is more crucial and it could be fun to be able to make sure we only face one specific type of opening. Because I think 1.d4 is more advanced and requires completely different state of positional knowledge that mostly above 2000 rated players prefer. And I would like to prefer only facing 1.e4 until I am comfortable.
Think about it, in addition to selecting white or black, there is an option to select which first move you want to start / or counter with.

lichess.org/@/thibault/blog/we-dont-want-all-the-features/q3nOzv4n
As thibault once said, 'When implementing a new feature, we always think of what will go wrong.'
Firstly, the lobby would be a mess. If such a feature is implemented, then other openings would also have to be added and since there are thousands, the ui would look like it was dragged through sand for a mile.
Besides, if you want to play a specific opening with a friend, you can always create a tournament with that position and give him/her the link.
If you want other people, you can always ask in general chess discussion.