WIthout a reasonable signup bonus for like $3-5k initial spend, this card is going to tank. Getting the Arrival+ is still the way to go for the $500 travel bonus and AF fee waived first year.
15k bonus for $15k spend essentially means 2x miles per dollar, that is of course the average person puts all their yearly spend on this just card. Any savvy churner knows getting the most amount of points is best done by using multiple cards for category-based spending rather than a single one..