I think the dreariness of how games in domes look is the biggest detractor for me. There needs to be ample natural light for it not to feel unnatural. But does that justify nearly twice the cost to have a roof that opens, but is never used? The cost savings make sense. Spend those dollars creating an actual baseball atmosphere inside over drab concrete and fluorescent lighting, and I dont think too many fans will lament a fixed roof in those climates. .