IMO Wiz 1-5 (and similiar blobbers) are entirely different beasts to games like Wiz 6-8 and Grimoire, and as such they really can't be compared.
I don't know a better to way explain it than this:
>Wiz 1-5 are dungeon crawlers, this means that the dungeon is the sole focus and the true enemy of the game, every other aspect revolves around this design principle and their function is to enchance that enemy, and make the experience must be as tigth as possible;
>Wiz 6-8 are more classical RPG's (this becomes more apparent in 7), so the dungeon is no longer the star of the show and other aspects (some brand new, as they would amount to bloat in the dungeon crawler) share equal if not higher importance, aspects such as: the game world's design, the level of interactivity, exploration, c&c, quests, gameplay systems that allow for builds that aren't fully meant for combat or dealing with the dangers of the dungeon, etc...