What Magic is saying is that if JL isn't well received either, then you're not going to know until JL actually comes out so if you're going to make changes after JL comes out, you're putting the people who are working JL2 in the same boat as those who are in JL. At some point in time you have to make a decision of whether you're going to stick with something or keep on rolling, however, if you keep on rolling with something that hasn't been well received there are always going to be consequences down the line. You're not avoiding it. You can run but you can't hide.