multicurrency charts workaround

Our shop is multicurrency. The Dashboard’s Performance & Charts data though seems to show the aggregate sales numbers as all being made in the base currency only (e.g. 1000EUR in sales for the given month), despite such sales happened in various different currencies (e.g. 500USD + 250EUR + 250GBP). Have workarounded this incorrect and confusing behavior by changing the currency symbol to the generic ¤ using the following filter:

add_filter( 'wc_currency_settings', 'ew_currency_settings', 10, 1 ); 
function ew_currency_settings( $array ) {
    $array['symbol'] = html_entity_decode('¤');
    return $array;
}

Perhaps you guys would consider doing something similar into the plugin, until proper multicurrency support is being implemented.

Thanks.