Would be cool to allow currencies for the "Left icon" for text input fields. I suppose you can add a "Suffix" but hard coding it seems fairly straightforward especially with dozens of already embedded icons.
I can see changing the Input Type to currency appends the currency icon to the left.
We're currently rolling out a new Number Input with support for any currency code! The default symbol and formatting will depend on your browser and locale, but you can also override the defaults with new prefix/suffix fields.
If you don't see the Number Input in the component list yet, check back in a few days. We should be fully rolled out sometime this week.
Check out the changelog for more details.