Nah, that'd be too Vatsim'ish
With the web entry, flight plans can be set to queue up for the controllers to handle when they catch a break between the microbursts of activity. The FAA has used pretty much the same standard form for many years, just replicate that (since this service is going to appeal largely to students and flight training centers.)
Though, unlike the form that Vatsim uses, I would add some hold over boxes that give an explanation of the requested fields. Vatsim always made the assumption that if you were filing IFR that you were fully trained IFR. Since this is to appeal to students, the explanations will help them to file a better flight plan.