Yes, if you use version 4 of the extension, takes a little setting up. (but it will not give you a synchronised horizontal scroll)
Yes, you can manipulate the csv table that is returned to remove the columns you do not want
Yes, you could create a custom filter bar that searched the underlying data
WIll take some time and effort to put all that together....
On second thoughts, you may have more success (and find it easier to create) using
@Kevinkun 's Tableviewer extension:
so you can set up the style as you wish, if you know some CSS knowledge.
add ClearTabe block.
other minor fix. Now you can use data rows with different length.
add SetStyleSheet block, you can write the stylesheet here, if you have too much style to setup. Only the last time to use this block works, since the second time will override first time.
add ShowTable block. Now eve…
(read everything, and use the latest version)