Himanjot, adding macros would probably require defining keybindings, and variables and this gets complex pretty easily, especially in the browser. But it all depends on how you define what is a macro. If the usage of variables is not required, how about I implement it as snippets? i.e. The user defines a "prefix" name for a query, then it would show up in the autocompletion menu like what I did in the attached video.

That looks pretty cool! so its more of an auto complete?

I think a drop down menu would be good. Yes its more of a snippets store.

A more advanced version (maybe in a later sprint) could recognize frequently run queries and add them to the list.