You can actually use setscale commands to change your characters actual size. SetScale 1.0 to reset to default, Setscale 0.94 to 0.96 for a somewhat short character, or setscale 1.6 to 1.8 for a relatively tall character. You can go under 0.90 or over 1.10 though you'll probably run into unintended issues the more extreme you move away from a medium sized character. Such as bumping into ceilings, not being able to climb effectively, and if you go to Statue of Liberty or to insect extremes lots of interacting with the world will feel impossible. I guess if you wanted to have a higher first person view you could make your altmer taller, though that may have quite limited potential being as altmer are already are the tallest race by default... And you might still be viewing the world through your chest which still may be unsatisfactory.
I recommend not using the player.setscale if you want to play the game legitimately and not unintentionally nerf or buff yourself. The problem with player.setscale is that it doesn't just increase the size of your character, it also increase your movement speed, your jump distance, and even your damage output. It scales all of that to match your new size. You may have a difficult time noticing this if you make minor adjustments from the default value of 1 (say 1.03 or 1.04 to get your character to Nord size), but it's still happening regardless. Your character will be able to move faster than s/he should be and hitting hard than s/he legitimately can. The differences are very obvious when you do more extreme changes. I imagine the opposite is true if you shrink yourself. Now, if that kind of cheating doesn't matter to you, then there you go. But for players who want to play the game without cheating and wish they could modify their character's height, player.setscale is not a good solution (unfortunately).
I was very sad to realize all this after doing some tests after reading up on this proposed solution in another thread, because I've invested a large amount of time into my character and (for whatever reason, probably because I've been sticking to a first-person view almost all of the time) I just now noticed tonight that my Imperial character is noticeably shorter than even the Nord women. Makes it difficult to feel heroic. But, I'd rather be short than turn into Skyrim Supersoldier through this particular console command.
It kind of makes me wonder if there is an actual movement speed/damage output difference depending on your race selection. Is an Imperial character slower at running than a Nord character? It would certain explain why I have to sprint occasionally to keep up with a Nord quest NPC (when following them to a location). Do Nord characters, in fact, do more damage in melee than Imperial characters because of their larger scale (typically set at 1.03 compared to the Imperial's 1.00)? I'd love to know if these subtle differences are built into the scales or only a result of using the setscale command.