It's not that much of a big deal, it's not like you have any reason to explore after collecting all effects. You can always roll a new game for that.
I definitely think it'd be better to have it fixed than not. I still enjoy wandering around the dream world exploring after I've gotten all the effects.
Well, does anyone know how to modify the installer contents?
Well, technically, Marisa is a name in spanish too. In fact, I was surprised when I saw her name written with kanji instead of kana.
I think Marisa's portable edition of Yume Nikki fixed this problem: https://mega.nz/#!QJtGCbqa!qTpWVlsyXAPf63lAtkWQQqTbBNu1QQtoabWwqyggFf4
(Speaking of which, I wonder if it'd be a good idea to host their version as well?)