Not sure I understand this, for example, with targetprocess I can use it as a complete swap for trello without any loss of functionality or simplicity. Take a board for example: http://www.targetprocess.com/product/, it's just as easy, if not easier than trello (as it also allows for the drag and drop customization of cards) but if you like you can take advantage of the more advanced, yet still easy to use features and all with seamless reporting.
