User blog comment:Blood Reaper/Skyrim 1.5 Update + Video/@comment-3428817-20120331080304/@comment-69.146.244.153-20120401170325

The issue is how leveling works. In FO:NV, you gained xp for killing enemies, and so merely increasing the level cap was easy. In Skyrim, you level up as skills do. Once each skill reaches 100, it cannot level up anymore and you can't recieve any "xp" from that skill. If all skills are at 100, then it is impossible for you to gain any level, thus resulting in the 81.5 level cap that exists now. The only way to increase level cap would be to add a new skill that you could level, or add a "level up" as a quest reward that bi-passes the need to level up a skill. Technically, if you could level your skills beyond 100, there would be a different level cap. The level cap in Skyrim works way differently than in FO:NV because the mechanics for leveling are completely different.