Doing a prequel is smart and possibly came about due to the popularity of the first flashback of a younger Mert with Linda in BL with Himeros's supporters. I have no idea why Himeros did not seek help/ideas from their community of how to tie up BL, if they got tired of the story line. But at least they ended it instead of dragging it on longer.
Himeros can always do a special alternate BL chapters 11 end/12/13/14 - starting with a threesome with Mert, Kay and Linda when she sees them (since it was already setup nicely) instead of the ex boyfriend path and everything that followed. Then definitely an awesome foursome (with Hannah)/orgy to celebrate Mert's birthday etc, which leads to the heart attack event and leaving the island.
P.S. I still think would have been awesome as per my humble edit
