Hi,
The integration you've mentioned works only with the PRO version of the Admin Columns plugin, which is an extra cost.
And something else, I'm of the kind that doesn't like to use many plugins to serve the same purpose. I know it could be my problem, but I'm sure many others developers share the same mentality.
I don't want to have all the features that the Admin Columns plugin has in your MB Admin Columns plugin, what I'm looking for is only a basic support to enable filtering regular fields.
I understand that it may involve many changes on the code level to support this feature, but I think it is worth it.
Could you please accept this as a feature request to enable filtering all kinds of fields using only the MB admin columns plugin?