I thought of that but I personally feel she would kill a debate, she is a lawyer and debating and ripping apart arguments is part and parcel of the job. In the UK, the new Labour leader is Keir Starmer who is a barrister and in all the recent debates he has been arguing very well and ripping apart the opposite and making them look very inadequate.  

I also believe it is very unfair to compare the Obamas to the Trumps, they are totally different and I feel that Barack wouldn’t feel the need to interfere because he knows Michelle is more than capable, Trump on the other hand clearly wouldn’t be able to put his ego to the side