On Septuagesima Sunday, this year on February 16, we were privileged to have a Sung Mass in the older form of the Roman Rite celebrated by Fr. Dan Pattee, TOR in Christ the King Chapel here at Franciscan University.
For these Masses we move the altar so that the altar stone is towards the congregation, facilitating worship ad orientem and we move as much as possible out of the sanctuary. I really like what we did with the plants. They cover up all the...wires...But you wouldn't know it by the way we placed them.
Isn't it beautiful?
The platform is a great idea. I think one could even make it big enough, provided they had enough storage, to enable three steps. Yes, that'd be a lot of wood, but a good carpenter could make it happen. The gradine is a great idea too. It's just some long rectangular prism-shaped pieces of wood. To support the altar card in the middle (and for a crucifix at Low Mass) we place old liturgical books in between the wood pieces, and we cover it with a nice cloth.