Hi Marc,
You removed unneeded parts but I believe you removed one needed part.
Let's take the case of CHECK TABLE. Looking at [0] this statement can return useful information (Msg_type, Msg_text).
When I try it without Ajax, I get such information so I believe that with Ajax I should also see it.
I'll work with this and update you soon. Thanks for instructions and testing the feature.
Regards, Thilanka.