any class name is what a character aspires to be if they survive the ordeal. Otherwise every class name must change as the character levels from stable hand to squire then knight.
Which is how they worked in AD&D. You reached 'name level' sometime around 8-11th or so.
And since I've already done it:
1 Hussar
2 Sergeant
3 Centurion
4 Hipparch
5 Tactician
6 Oberst
7 Brigadier
8 Strategist
9+ Warlord
Read more:
http://www.enworld.org/forum/showth...y-The-Warlord-in-prior-editions#ixzz3qN4pnm00
(I suppose, it'd be better alternate-history to salt those level titles with later (sub)classes the way Sorcerer & Warlock appear in the MU level titles, or Champion and Swashbuckler among the Fighters. Marshal could fit in at higher level. Banneret at a lower one.)
Not that the lower level names made any sense, either, with the Cleric, for instance, being demoted from Priest to Curate upon attaining 4th level, then converting from psuedo-Christian to Tibetan Buddhist for a level at 7th, and never actually getting it's class name as a title (topping out at High Priest), a distinction it shared with the Fighter & Magic-User, most other classes & sub-classes though, all got to go by their class name at some point - the Ranger, only at exactly 8th level, for some reason (or probably no reason), while the Druid had to wait for 12th, and beat out an existing Druid. The Magic-user rapidly changed methodology from a Warlock, to a Sorcerer, to a Necromancer as he approached name level (Wizard, which later became his class name), too (yep your LG MU has to spend 10th level being a Necromancer), but not stopping there and going on to Mage and Arch-Mage (because somebody has to be making the Staff of the Magi and Robe of the Archmage...).
Really can't worry too much about class names. A PrC that has a place in the campaign world, and includes some sort of formal membership might very well have it's name really mean something IC. Some specific sub-classes, like PDK, may also be that way (though, really, that's an indication they'd've made better PrCs). Aside from special cases like that, a PC could go his whole career without ever claiming the name of his class (or classes). A class name just has to be clearly suggestive of the class concepts and sound cool. Too obscure, and it might sound cool, but it creates no impression (a problem with some of the possibilities on El Mahdi's list).