That sounds odd , putting your missal down. Never heard of that before.
For me , I use the St Andrews Missal. and find it very informative as it leads one step by step thru the Mass, explaining what the Priests and altar boys are doing, along with the responses by the parishoners in darkend lettering.
During the canon of the Mass I put it aside to take full part in the transubstaniation, giving full attention to what is actually happening.
As the Ordinary becomes familiar, one should be drawn to the Latin , and memorizing it. The the Mass takes on a whole new meaning, one is drawn to the significance of the Great Sacrafice.
Now there is a big difference in the Missal s out there. I used to use the St Joseph , until I was led to the St Andrews. It changed my whole outlook on what what was really going on.
Also the Missal is so important for the newcomers, or the younger ones , the ones who are really interested in what the Priest is doing , and why he is doing it.
Might be a good topic if it hasn t allready be done , to ask, "What Missal do you use, ", reason for it. Some thoughts .