wouldn't it be easier to use shift-enter
The problem with shft-enter is that it doesn't achieve a change of view by increasing the seat height - it does it by swinging the runway up towards your nose from approximately the nose gear for a tricycle undercarriage aircraft.
What that means, if you've ever flown in real life, is that the visual cues place you too high compared to your true height over the ground or runway. This is actually the last thing you want if you're trying to do a 'proper' landing because you're hitting the deck when you judge you should be flaring.
If you want to know what I mean, grab the Sopwith, Corsair or DC3 (all tail draggers note). You can't see the runway - hit shft-enter a few times and you'll see how the view of the runway that you do get changes.
That's what happens when you do it on final approach. When you learn to fly for real your instructor will at some stage ask you about judging the correct glideslope path for a good approach and you will have to tell him how you you interpret the view of the runway at different heights. Hold a sheet of paper up in front of you just below face height, flat with an edge towards you. Raise the far edge , you see more of the paper (runway) - you're too high. Lower the far edge yu see less of the runway, you're too low. See what I mean? That's the effect of shft-enter (but OK, it's the only way to do it I guess)