Arena presents a really interesting opportunity, instead of loading your deck up with basic lands like normal, they should give you a basic land placeholder card that will get replaced with a random basic land card of that type from your collection when you play a match, that way everytime you play a match you will have different lands each time. For example I put in 20 basic mountain placeholders in a deck, when I start a match they get replaced with 20 different basic mountains, a mix of regular mountains and full art mountains if I have those. It would also be nice to have an option to decide which mountains get used for random placeholders, say if I only want mountains from Strixhaven and full art mountains.