Substantively, I think that a “Best CYOA” category might be a nice idea and even a helpful outreach tool. CYOAs would still be eligible for Best Game, but there’d be a special category for them as well. This might make it harder for a CYOA to win best game, just as pitchers rarely get the MVP because they can win the Cy Young (non-baseball fans: please ignore), but I think in years when a CYOA clearly is the best game it would win.
As for S. John’s substantive objection to the CYOA/parser distinction… ahhhh, that needs another damn thread.