Agreed. The venn diagram of people that can afford the pro and those that care about emojis is likely rather slim.

However, watching the photoshop demo I could see the value. Honestly though, I think an add on accessory the size of a trackpad would be better. Unfortunately, that would sell in numbers so small that software support would be non-existent. So, this is a compromise solution that doesn't have Apple's usual boldness to it, rather a lacklustre add on that will deliver lacklustre results (to both sales and usefulness).