External Api management system fully customizable

Hello, why don't develop a system api for integrate third part with an import of xmls, for integrate an external application o webservice?

An example we have a company with web service and send us one information like this

<response xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" status="1">
<elaborationtime>0.022</elaborationtime>
<result xsi:type="webservicename">
<products>
<product id="id" name="product">
<numberproducts>114</numberproducts>
<numberlastproducts>67</numberlastproducts>
</product>
</products>
</result>
</response>

using a customizable fields for change type of calls to external api.
Also with a part of configuration with login data to external api (customizable into the fields also this, for exaple using xml fields configuration file), like for example username password and url of api. I have read an email by team where the team talk about developing, send your suggestion etc etc.
This is my suggestion:
an External Api management system fully customizable.