figured someone else had the same idea i had about that phantom grid. if they came up with better stats for the phantom weapons, then maybe... plus it would run the risk of phantom element for your Soul, which means weakness damage each time they're hit...
as for that ticket, i made the mistake of thinking it was 25... it's a tall order, but if you somehow do get that many drag eyes.... easy access to the 100% eidolons or a kaiser...
also makes me wonder too if they'll introduce a phantom version of the 100% eidolons (maybe something like 100% special attack, plus up to 20%-40% more when using different elemental eidolons)