It would be awesome, if you easily could select more than one suggestion in the "List Members" dropdown.

I often need to choose more than one field from a table - and if the table needed isn't the first one, it takes some extra typing to find it.

One option could be to leave the dropdown open when choosing an item. Another option (Stolen from LinqPad), is to press a dedictated key (½ or ` in LinqPad) which chooses it, but leaves the suggestion list open.