While I don't necessarily agree with the idea of giving everyone openers to spam, I do feel it's important to teach them what is good and what isn't in certain competitive mods, and i think this goes beyond openers, for example in mods like boxshu and lenshu, certain positions are used very commonly due to how good they are at generating momentum and just launching you in whatever direction, such as the crab. I support this idea, but perhaps a different approach would be ideal.
I think it would be interesting if there was a place in the client where you could read some reviewed official guides written by experienced players, something along those lines at least.