Hmmm lets see. I really don't know where to put Inquisition. I haven't finished it, am crawling through it at the moment. Even though there are a lot of aspects to the game that I think are really good, it just doesn't excite me because of the slow pacing. Below is the order of all their previous games. For pure enjoyment I would probably put it down the bottom of the second group even though I can see it is technically a better game than that.
ME3 (Multiplayer was superb, main story rich with emotion, ending was disappointing but game was still great)
ME2 (Very polished mesh of gameplay and story, perfectly paced)
BG2 (Original at the time, charming with great banter and storytelling)
KOTOR (Very immersive, great story, well paced if a little short)
SWTOR (Unlike other games on list, compromises to stories needed to be made to be an mmo, but still had 8 good stories and eventually the gameplay became good, made me see why wow was so popular because I could never get into that game)
DA2 (Unpolished with a range of bad and good things. I stil;l enjoyed the game a lot, I thought the story dlc was superb, and the characters wery amazing. Just reused dungeons and lack of finish arrrghh!!!)
DAO (Unfortunately too much of the story was spoiled before the release, very few surprises, gameplay only really worked in the lvl 6-12 range)
ME1 (Good story and brand new world, crap gameplay, reused interiors, tedious vehicle gameplay)
JE (Didn't really like the gameplay. The story was pretty good but quite short. It did have a certain charm I enjoyed)
BG (It was OK, story was decent but gameplay was pretty terrible)
NWN (never finished it, terrible gameplay and presentation)