I’m sure Elementary will be fine
If they stick to canon.
Sure, Joan could love Sherlock…. we all know John does (platonically)…
But I’ll only accept it if she ends up marrying Mary Morstan like he does, proving to everyone that they didn’t hire a female Watson strictly because America is homophobic when it comes to their primetime tv or that people would think it weird that two men could be so close.
That being said, I’m sure Elementary will be entirely not-fine and I will be, once again, embarrassed for my country who can’t come up with a single new idea anymore.