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This would be helpful especially in the non-profits where they are trying to encourage donations. The ability to have mxmerchant accept payments from a cell phone - such as text a ten digit number that corresponds with the merchant 5555550551 with an amount in the text field 10 to donate $10. Vanco has a product offering Give+Text. First time donors have to enter their card info into a screen similar to MXMerchant Mobile, Once donated, can donate again without entering card info and could make it a recurring charge.
It whould be nice if user able to add some custom text (ie: legal text) above the pay button in the drop in component. A solution could be to add an optional prop to the drop in configuration that would accept text or a node.