Things like crown racks just confuse the general public and the casual fans, and this sport needs them. You cannot muddy up the game with wierd racks and odd games and expect to get more people watching, the opposite is in fact what happens.
Single point per a ball rotation would be a tough game, just use the full 15 balls. The issue with the game is it's high difficulty with regards to offense combined with far easier safety play due to the extra balls. That imbalance would mean people take on alot of easy safeties over trying to make tough shots and the game would become boring to the fans. Another issue is it is STILL rotation pool, it is still not giving players alot of options, we don't get the "chess" aspects of pool that you see in 1-pocket, 8-ball, straight pool, and snooker because the players don't have any options on which ball they can shoot. It becomes solely a shooting game with not alot of strategy and that again becomes boring.
8-ball is THE most popular game in pool by a landslide, I mean the second most popular game is not even close. Almost all amature pool players play 8-ball in leagues, the general public playing in the bar? They are playing 8-ball. Everyone knows 8-ball, almost noone knows another game. Pool needs to embrace the game that is clearly the most popular game and that has been so for many decades and go with that for the pros. Find the equipment specs that make the game work, that give it a proper difficulty level, and see how it clicks with fans.