I finally melted the witch recently, I had come one shot away before and drained. It certainly was a great mini-wizard mode that is better than some game's wizard mode payoffs. As for SOTR, I don't imagine many people will ever get there though I also never expected to get SDMEWM on TSPP either (and never came close). I don't see the extreme difficulty of a wizard mode as a put off, just more of a vicious tease that better be worth the payoff. I do see it as a reason to keep at it and Rescue does often put itself out there as the mode most difficult to get going when and how you want it (next to No-Hold mode coming up whenever you have stacked MBs!).