At first, it bugged me because it seemed to me that I was never able to find anything to do Time-wise. Looking back on my favorite game, I need to say that it was the best part. Dungeons are great in all, especially in MM, but I think the time traveling, the unreality of it all, made MM the game we all know and love. Imagine a MM without only 3 days. With unlimited days. The moon? It couldn't exist. The carnival of time? It'd only happen once. And don't even get me started on how mad players would be about the Anju Kafei Quest.
all in all, I think the 3 Days made MM the best of all the rest. From sidequests, timing, great characters, a giant moon of death, great times were MM. And I'm hoping I'll relive the 3 days soon.