For VNB10N07, if your load is 1A, and you have 10A current limiter, I don't see the problem. Do you plan to use more than 1A, even a lowZ is only 5A. Unless you have a short to GND, you shouldn't approach the current limitation.
If you use closer to 10ohm instead of 10kohms, your issues with 3V will be far less. Also if you make sure to have a good GND, your issues will also be far less. I agree that MOSFET drivers can help maintain consistent Ton and Toff times, however they often aren't required if you can uphold certain other design criteria. When I use a MOSFET driver, I typically make it galvanic isolated with an op-amp. However the number of components gets significantly high, which is hard for a DIY to populate. My goal with this board is to make it easy for people to assemble with minimal tools. To obtain this goal, I'm assuming some levels of overall system design.
I would suggest a slight caution with the VNB10N07 the 70V clamp. 70V may stress your injectors. I posted some notes on a wiki found here
http://code.google.com/p/daecu/wiki/Inj ... ver_theory
A series resistor of 10k is too high. I see Idss is 500uA which would result in 10k(.5mA)=5V drop. With a 3.3V supply and if you are looking for 3V to the gate, the absolute max you can have is .3v/.5mA=600 ohms. Remember your going to have some drop across your MCU high side drive, and the suggested Rin is 10 ohms. I'd recommend something more like 20 ohms.
The fault current is only 15mA to 20mA max. Each pin is capable of 25mA, so we are OK with the fault conditions. Even with 6 channels faulted, we sill don't exceed the max we can draw from the MCU power source.
