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You want to make an MMO. You start a company with other people's money since you did not win the lottery.
Now you have 2 choices with varying risks.
1) Make an old time MMO. (Not as popular, but may have longevity)
2) Make a new-age MMO. (More popular, but may be short lived)
Which path do you go down?
(Let's not go down the buzzword paths of "innovative", "new", "revolutionary" and the like. Remember, you have investors to answer to.)
Personally the only modern MMORPG trend that annoys me is the idea that MMOs need to be designed in a way to attract people who don't actually like MMOs. Which to me makes about as much sense as someone trying to figure out a way to get vegetarians to eat at their steakhouse.