I started importing DQ games in 99, so it being called DQ in North America now has little impact on me.
The gameplay in the DQ games have remained pretty faithful throughout the series. Get to an area, buy new stuff and fight around, or try your luck against badguys with weaker stuff (which is fun, IMO).
Generally, you "need" to fight around for a bit to become able to withstand fighting the enemies in new areas, but once you are familiar with the game, you don't generally have to, and it is IMO much more fun to go at it while weaker.
I grew up with DQ and FF, so I can't really make an unbiased assertation to the gameplay of the series. I'm more than used to fighting around for a bit to buy a weapon or amor that makes survivability easier. You can go gung-ho, but usually only to a certain point. Even still, you may get lucky and bust your way through. IMO that is a nice little reward; getting to an area at a much lower level than you "should" be at to fight better monsters.
It very much depends on what you look for in gameplay with these games. I am an absolute kleptomaniac and item-seeker, so I have a grand old time finding items by snooping through various houses in towns and robbing people of treasure chests. The early useful item via a drop is always fun for me.
The combat in the games remains my favorite for RPG's. Not even blackace can say "hold down X" for these games, you will get your ass kicked (unless you level up insanely at the first areas to like level 40). One of the big charms to me in the series is that the badguys usually stay tough throughout the game; strategy pays off quite a bit. Simply attacking your way through can work sometimes, but other times it will beat you down.
Storywise, you shouldn't expect a jaw-dropping experience. The DQ games are very simple in their stories compared to what else is out there.