For me the champion girl might become a feasible option. I need on average six tickets to defeat Whaty on non-final stages, just now got him down for the second time and stand at 40 shards already. I don't want to brag with my luck, but just say there is still a fair chance that the drop rate is significantly higher than 14.3%. Tomorrow I have to go through the final stage, but I will continue.
If I end up with 40 shards? I would have been proven wrong. If I end up with 60 or 80 shards? Still fine, as I might be able to finish the girl within the next two years either in Mythic Pachinko (using 3xMyP orbs) or on a villain during orgy days. Getting on average 30 tickets per day, I would not consider spending less than 100 tickets on this excercise wasted resources (it's Whaty, of course, on Visor or Alban it would be a different picture).
With currently 71 girls in my permanent Epic Pachinko pool, there is no other way to obtain the girl. As explained above by DvDivXX, I can't waste the valuable 1xEP orbs for the classic event (neither for OD), but have to keep them for LC (and the sixth PoV). Clearing the classic event and getting the chest of gems is out of my reach.
Summary: As I otherwise would have simply let the girl go for the next 1-3 years, the new feature is worth considering by me. Might be at least some players around level 350-370 (sitll in their first year of playing) are in a similar situation.