I do understand why there is a need for strict deck restrictions in Tournaments, but there should be a tick box for when challenging friends to take away the deck restrictions. I've often said with my friends that we'd play a load more if we could just use any cards we like. Being restricted to just the 1 to 3-star cards with a single 5 star just takes away a lot of the creativity and fun of building decks and takes away the motivation to farm them.

Please consider having an optional choice of removing the deck restriction, if only for custom games that you challenge people outside of tournaments.