Teidd Designer Import SOAP Relational Model Mapping No Columns defined

issue
====
Create Relational Model from SOAP service validation failed with "No Columns defined error"

Reproduce
========
1. deploy attached StateService to JBoss DV 6.1(assume it DV run on localhost), WSDL File can be viewed via [2]
2. Use attached 4 pics to import SOAP Web Service will reproduce the issue(teiid-designer-ws-3.png and teiid-designer-ws-4.png show validation errors)

Enhancement
==========
1. Simplify the import wizard - from a user's perspective, I think the main obstacle is the wizard is too complex, especially SOAP, federation related wizard, it's very difficult to operate without a step by step documents.
2. Simplify XML document modeling related operation - current wizard not user-friendly, web should do some enhancement in request/response xml document modeling.
3. Simplify vdb archive structure - the Designer generated vdb is more complexed compared with dynamic vdb, it have more definition files(sources.xmi, views.xmi, vdb.xml), there also some metamatrix link like [2] exist in .xmi, actually these links not really exist, if we remove these kinds of things, the designer wizard logic may be more easier.

[1] http://localhost:8080/StateService/stateService/StateServiceImpl?WSDL
[2] http://www.metamatrix.com/metamodels/SimpleDatatypes-instance#XMLLiteral