Just adding some info that might help:
Looks like the icon sizes are defined in classes/XLite/View/ItemsList/Product/Customer/ACustomer.php
in the function:
Code:
public static function getIconSizes()
{
return array(
static::WIDGET_TYPE_SIDEBAR . '.' . static::DISPLAY_MODE_STHUMB => array(160, 160),
static::WIDGET_TYPE_SIDEBAR . '.' . static::DISPLAY_MODE_BTHUMB => array(160, 160),
static::WIDGET_TYPE_CENTER . '.' . static::DISPLAY_MODE_GRID => array(160, 160),
static::WIDGET_TYPE_CENTER . '.' . static::DISPLAY_MODE_LIST => array(160, 160),
'other' => array(110, 110),
);
}
I would try decorating this class, and defining my own sizes.