GOR made an interesting comment after the post on the significance of genuflections and other gestures about how we now mostly acknowledge the presence of the Lord in the tabernacle with a bow rather than a genuflection during Mass. Going with this is the idea that somehow Christ is "more" present in the Blessed Sacrament on the altar than He is in the tabernacle, - a dynamic and a static presence, I think I've heard it called. I cannot see how this can be theologically possible. Those who follow this quirky theology, are then driven to place the tabernacle somewhere less important - away at the side or in another chapel.
While the instructions do indeed suggest that it is possible to reserve the Blessed Sacrament away from the main altar in a church, I think this really envisages places where a great many people pass through (like Cathedrals and historic churches) and cathedrals (where the bishop's presence represents Christ to us). I've no objection to this - but the documents do say a side chapel - in other words, something like the Blessed Sacrament Chapel in Westminster Cathedral - NOT a pillar or stand away at the side of the main sanctuary. (By the way, these are so often not even practical, as there is usually not enough space on the shelf/table in front of them to use when the Blessed Sacrament is being placed in or taken out of the tabernacle.) Incidentally, there is a tradition of Blessed Sacrament towers at the side of sanctuaries but these are not the plant-pot stands we so often see today.
In other words, it should look like this..
And not like this...
The other drive to side-lining the Lord's presence is that when the priest goes to the other side of the altar and offers Mass "facing the people", he then has his back to the tabernacle - a position I find very uncomfortable and odd. The answer, of course, is not to place the priest front and centre thereby side-lining the Lord but to turn and face him, so that the priest is then at the front of God's people leading them towards Heaven. This means that when he genuflects at Mass towards the transformed elements on the altar, he is not at the same time ignoring the existing consecrated species in the tabernacle.