Capable of doing more complex queries.

[omarps]

At this point it's not possible to use more complex queries to reduce the number of requests and improve the overall performance.
Ex. In Javascript I can do this:

Trello.get("organizations/[my_company]/boards?filter=open&fields=name,url&lists=open&list_fields=idBoard,name", function(boards) {
  $.each(boards, function(ix, board) {
    $.each(board.lists, function(ix, list) {
      // It's possible to navigate from organization's boards to lists in a single get.
    }
  }
});

But in ruby-trello I'm limited to:

org = Trello::Organization.find("my_company", {"filter" => "open", "fields" => "name,url", "lists" => "open", "list_fields" => "idBoard,name"})
org.boards.each do |b|
  board = Trello::Board.find(b.id, {})
  board.lists.each do |list|
    // the more boards the more gets
  end
end

In this comparison I went down to boards, but this gets more complicated if I'd want also the cards, checklists, and members details.