For example, we use Ummul-Qura for calculations for all the salah (based on hanbali madh-hab) but Ishaa has always been an issue because of the way it’s calculated. Would be nice if we were able to change ishaa to a more correct calculation and keep Ummul-Quraa time for the rest of the salah.

جَزَاكَ ٱللَّٰهُ خَيْرًا