That might be doable but I don't think it would gain you much in the way of effective size. Your finger would still be the same distance from the front of the guard. You would simply have more downward protrusion and more chance of it snagging on something.

When you pull the Omega barreled action from the stock, you will see the hammer and trigger are (or at least were) only two major pieces. I was fascinated by the inter-relationships of those two pieces. They may look simple.. they are anything but. Angles and curves that produce exact timings by virtue of their dimensions and shapes, I'm sure you would be looking at what had to involve substantial CAD assistance. Changing even slightly just one of those dimensional properties could easily render the rifle inoperable. This discussion makes me wish I had another one here to tear apart.

The new X7 does appear to be somewhat different at least in the exposed elements of that action design - will be very interesting to see what else might have been altered. I'm hoping that new trigger guard does offer some benefit but will likely have to tear one down just to be sure. Science, you know?