With respect to your opinion, and to the fact that any 'ticket' designation is necessarily a bit subjective since Disney doesn't use ticket books anymore, there should be some sort of unofficial, loose standard by which attractions are judged. It can't just be left to opinion or the fact a given attraction is just the grandest ride in its particular land or park. Were that the case, both It's Tough to be a Bug and Carousel of Progress, respectively, could arguably be classed as "E" tickets.
By any reasonable standard, Fantasyland has gained a solid "D" ticket attraction, but you are quite correct that it will draw "E" level crowds. It's the greatest new Disney attraction coming in the next few years...of course, it's also the only new Disney attraction coming in the next few years.