This is a little picky, but...
Could we please have 'Add gamma to input' in the Corona Normal node set to active by default?
It seems I have to tick this for 99% of my normal maps anyway... and I don't see why any other user would be different. It'd just shave a few seconds off every material creation. (Multiplied over hundreds of materials per scene, over multiple scenes per week...)
And also set it to default for Corona conversion too, maybe?
Food for thought. Thanks!