One of the things that used to turn me off of MMOs was that progression and leveling felt like a daunting chore, rather than something fun. Looking at spreadsheets, pouring over online information about "optimal classes", selectively choosing what activities I participate in: these are things I don't want to do in a video game.
The Elder Scrolls IV: Skyrim was a great game for a number of reasons, but one of the largest improvements over previous titles in the series was the progression system. In Morrowind leveling often felt like a grind I had to complete before I could continue with quests. I would literally stand there and let cliff racers whack away at me to improve my armor and block skills (at times I would even change the channel and watch TV while this happened.) Oblivion made some real improvements but managing my skills still never gave me any pleasure. Skyrim was a totally different animal.
In Skyrim, my character leveled based solely on what I decided to DO. If I spent a lot of time killing things with a one handed sword, I would become a blade master. If I often wore heavy armor into combat, that would become the optimal armor for my character. This isn't to say that I lost control over my progression. It is a less conscious process for sure (I'm not making "Min/Max" decisions before I start to play) but its still my decision. The great thing about this system is that it puts the spread sheets in the back ground and makes my progression an extension of my gameplay choices, rather than something I have to do separate from playing the game.
Elder Scrolls Online seems to be moving away from the traditional MMO spread sheet and more towards a system like Skyrim's. I can equip any weapon and armor I want and my progression will dependent on what I choose. I also have class skills, but these won't necessarily be the same as every other character who chooses my same class. Each class has a number of skill trees from which I choose skills to slot on my skill bar. Presumably, I will begin the game by slotting a number of skills from all three trees. Naturally I will find that some of these skills are more suited to my particular play style. It will be these skill trees that I decide to put points into in the future.
To sum up this system, it is organic progression; my character advancement depends on my play style and I don't have to think a whole lot about it. Its a natural process that allows me to forget about the numbers behind the scene and focus on playing the game and having fun.
What do you think? Do you prefer the more traditional MMORPG progression systems? Are there potential pitfalls I'm missing?-