Practice arena? Friends PvP

With all these tournaments that depend on a single defense team, it would be nice to have a practice arena.. a place where we can use our teams and build our opponents to practice on. The opponents can be as strong or as weak as we want them to be and it allows us to practice offline.

Also, how about we practice with our friends? A PvP arena as an option to the practice arena. A place where our allies can play non-ranked matches?

This can apply for both ships and characters but at least make it happen with characters. Thank you!