Whilst I appreciate your reluctance to add rooms, it strikes me that Matthew Smith, by creating the mysterious Room 47, gave us licence to contemplate one extra room. So in my Fantasy Version of JSW I would include a modified version of The Belfry to tie in with Rescue Esmerelda, and it would also allow for a lateral exit from the otherwise inescapable trap that you may have inadvertantly designed at the top of the Watch Tower... (see my comment at http://jswmm.co.uk/topic/71-new-2015-ti-994a-conversion-of-jsw/?p=353)
Perhaps make it a leap of faith requiring a pixel perfect rightwards jump off the upper platform of Watch Tower, also with a rapid reaction required upon entering The Belfry to avoid a rapidly ascending Quasimodo... What do you reckon?