Sharing the code to solve issue's.
I have created a GUI application in C# that parses the TitleID etc. from WiiUBrew.org Title Database and uses the NUSGrabber application from crediar.
His NUSGrabber console application can be found here.
Info:
What it does is just parsing the table from WiiUBrew's Wiki with the relevant data. In case of Game Updates, data such as the TitleID is retrieved and the "00050000-" of the ID gets replaced with "0005000E". Otherwise only the "-" is removed, to make it work with NUSGrabber.
The data is filled into the Comboboxes (aka Dropdownmenu's) and the user can click on the [Download] button. After which this application launches the NUSGrabber console with the parameters, based on the user's selection in the Comboboxes.
Screenshots:
