Off topic and very, very personal opinion, but, since we are renovating the Parliament buildings anyway - and assuming, as I do, that the project I going to go waaaaay over budget and finish years late - then maybe we could disinter the Unknown Soldier from the National War Memorial and place his tomb inside Centre Block, in the Hall of Honour.
First: it's an appropriate place - so is the War Memorial, I agree;
Second: access can be controlled - a lot like access to Westminster Abby (where the UK's Tomb is located) is controlled - but without charge;
Third: it takes the Unknown Soldier away from potential political protesters but makes the Tomb available to Canadians almost every day of the year for a reasonable time each day.