The differences between the marshal and the warlord are pretty minimal. I wouldn't be surprised if the warlord started off as the marshal during 4E development and was renamed during the process.Though, I suppose in theory they could combine the Marshall (though that was more a miniatures HB class) with the Warlord.
Based on the fact we have Artificer as the 13th class, and signs pointing towards Psion as the 14th class with it's 2nd UA showing it's likely going to be in something. Given that they are going at a slower rate at for introducing new classes than they did for 3e and probably never are going to reach 20 classes. What should the 15th class be?
Fair.Personally, I think we have too many classes already.
I disagree with this implementation, though.If it were up to me I would make Artificer a Rogue subclass and Psion, Sorcerer and Warlock Wizard Subclasses make Warlord a Cleric subclass and Shaman a Druid subclass.