Not all of them of course, for example STEP:Core mods were tested and are safe to use straight from the beginning. are ok, but game altering mods can definitely mess the intro scene! In fact, it's recommended not to use any game-changing mods during the intro, unless they absolutely have to already be installed when starting a new game (SkyRe is a good example). You shouldn't be using mods like this during the opening scene, until out of Helgen dungeon.
However, I really do like the concept and if the mod author does release another version, I'll definitely be trying it again. I was able to analyse Lokir's skin pores while riding the cart, and the camera was pointed at the ground for much of the execution scene (including the bit where Alduin attacks). In the cut scene parts of 'Unbound' the camera position was wrong most of the time. When looking to the side, the character's actual head clipped into view. I tried it and found that it removed more immersion than it added. First Person Artifact Animation Replacer: First Person Combat Animations Overhaul (superceded) First Person Combat Animations Overhaul 2.
