It's not nostalgia (I didn't play it), I just find the actual system a bit boring and straightforward.

Sure, there is always the 'best' build in any kind of customization involved but that doesn't mean any kind or personal preference won't work. If a community comes up with the best option aviable that is an entirely another matter (let's not forget the devs usually make the content with the minimum aviable in mind).

On topic:
Classes should stay as they are, just remove the secondary class required for the job and make a big pop-up on the screen saying "you can now take the [insert job name] quest"... It just makes me sad a dev has to spend time with those messages instead of a player involved with the search of the information, but that is just my opinion. About scholar and summoner... It's a tricky situation.