Re: Need Help designing a Martial Duskblade
Sounds like a prestige class that combines the two, honestly. But if you are set on doing it as a base class, and aiming for tier 3, I'd make both progressions more limited, capping out at 4th level a la the Paladin/Ranger, and a slower maneuver progression than Warblade. (full initiator level, but fewer maneuvers known/readied)
Possibly make the maneuver refresh mechanic go based off spells (ie spend a spell slot to refresh your maneuvers. 0th level as a full action, 1st level as a standard, 2nd as a move, 3rd as a swift, 4th as a free), and make the ability to imbue spells into your strikes as a maneuver-esque ability.
If my text is blue, I'm being sarcastic.But you already knew that, right?