The script was submited do SSC a few weeks before it was published.
In the mean time I managed to implement it in a real world application and the results are good.
Maintaining the tags and registers tables proved to be a challenge as well.
The final version comes with options to
server-side paging (essential for web applications),
more filters, aggregations and order by options.
Thanks for everyone giving it a good rating.
And if you disagree or there any insights be welcome to post your feedback.