Best RPG? Oh never, but I did have my fun. It is perfectly reasonable to be able to enjoy the game, even vanilla(though I certainly got more out of it once I modded it).
You know what the thing is though? The Elder Scrolls games and the modern Fallouts are the closest to the perfect TYPE of game that I want to play.
Just an open world rpg with a deep, involving story, world full of actual characters and atmosphere and interesting combat mechanics that allow you to combine your built up strengths into a persona of choice, from the pacifistic healer to the wandering barbarian. Choices with consequence, multiple paths, immersion, actual companions with full personalities and character arcs!
Bethesda is sitting on my personal holy grail, and while I enjoyed Skyrim, it is Obsidian who has come closest to my dream with Fallout: New Vegas. And even then, why do these games have to give up the depth of choice of the old isometric games? I would good money for something with the depth of Divinity: Original Sin in Tamriel, and Bethesda has all the tools they need to do it already. That game has everything I could ask for in an RPG, except I do not like turn-based combat. I have enjoyed really good games in spite of turn-based combat, but it has never been my favourite design choice.
Heck, the modding community has done the most they can to try and fix the game mechanically, and there are some pretty basic ideas implemented which makes me wonder if anybody at Bethesda was actually considering the game's design as a whole when they were adding in the new mechanics. I mean, one of the most obvious things alone would be a perk tree for the damn Thu'um! Tying health upgrades to physical Strength! Stamina upgrades to movement speed and acrobatics! Not being able to be part of every guild at the same time! And actual quests! Even when limited in scope, some of the modded ones were more entertaining and thoughtful than a lot of the ones Bethesda put in vanilla Skyrim. If I don't want to do a Daedric lord's bidding, give me a choice besides just ignoring the quest!
I have modded Skyrim though, and I have had my fun, but I do wish a bit more thought would be put into the next Elder Scrolls game, and more importantly, the next Fallout game.