I love the custom icons (emoticons) feature in Business Calendar, but have been using the Google Calendar web view more recently, which obviously doesn't show the icons as they are proprietary to Business Calendar.

This is why I now use the default Android emoji set to begin my appointment title with an emoticon - this will show up in all apps but unfortunately BC2 doesn't "promote" this emoji like it does with custom icons (meaning: separating it from the rest of the title and e.g. showing it as big image in the widget as well as in the week view)

That's why:
As a BC2 user I want an emoji that is the first character of an appointment's title to be treated like a custom icon (separating it from the title and showing it wherever custom icons are shown otherwise) so I can maintain interoperability with other calendar views and as a bonus also use all the emoji available on my device 👍