Kai Dracon
Writing a dinosaur space opera symphony
I just watched the Winter Soldier, and Fury said Stark helped with the repulsor engine. He didn't say anything about helping design the new helicarriers entirely.
Designing those helicarriers himself contradicts Iron Man 1 with Stark stopping weapons development for the government.
Even designing the repulsor engines means Stark had to have been aware of the program at some level. Giving his tech to SHIELD kinda seems like a big decision.
I dunno, it could fit within a theme of dodging responsibility. First he helps SHIELD improve their carrier fleet. SHIELD goes bad and betrays everyone. Next he arranges for more oversight and designs Iron Legion personally. That goes wrong as well. At that point it's like "if you're going to throw your power around, you need to be in the suit, not trying to stay hands off."