Preface: I understand that, at least in the opinion of many MiceChatters, Disney has made some less-than-stellar new attractions, with too much emphasis on tying those new attractions to media franchises, for cross marketing. But, for the sake of the below discussion, lets not obsess about that. Also, this isn't about ride throughput numbers. What I'm going for, here, is a personal feeling about one option or another.
Most, if not all, of us have emotional, nostalgic attachments to one or more attractions and would be loathe to see them ever removed. So, would it be a bigger shame to a) Remove such an attraction that is still enjoyed by many, but may be long in the tooth and which is slowly losing it's popularity over time, or b) to not remove such attraction, if it were to be replaced by a new, original, higher-quality attraction that would likely be considerably more enjoyable to a greater percentage/number of guests (including children, adults and yourself), and which is a better enhances the theme of the land in which it resides?