With respect to FI - Lycoming would have to certify another engine as there is no equivalent to the current 360 model as used that is injected. It is not a case of just bolting an FI system on the existing engine.
Why that? There is the proven 180HP FI engine of the 300CBi. Would it be that much a drama that it could output 35 ponies more than the stock G2's engine?
These 35 hp would have added great power reserves / hot and high capabilities / additional loading options to the otherwise great G2!
I'm still waiting for an explanation why they were not using the CBi's "heli certified" FI engine. IIRC even the mounting direction would be comparable. (e.g. no need for vertical crank..)
Carb definitely starts a lot easier.
I don't believe that either, this time from personal experience firing up FI in summer and winter:
One of our 300Cs has the standard starter, the other one some hi-torque STC(?) version. Granted they turn over the engine at different speeds but
both fire up nicely, as soon as one has developed a feeling for how much throttle each type wants when cold.