additional plugin properties for Product Search

The Product Groups .net plugin in search mode outputs the product search bar. The search button has a magnifying glass and has the text "search".
Can the following be added as plugin properties please:

• to set the icon/turn off the icon
• set the search button text.
• set the placeholder text

CAI have been sold designs that do not include the search text and I feel others would want to be able to change the above.