First of all, this is by far is the best elder scrolls yet, and that's a pretty big compliment. The one thing I wish that this game had above anything else is more skill levels. I feel like I'm barely into the game and I have the best armor and weapons, plus all my of my primary skills are maxed. I play a stealth character using light armor, archery and dual wield swords, I've done the Thieves Guild, Companions, and College of Winterhold quest lines and I'm level 60. I've started using magic just so I can keep leveling and get some extra perks. I think it would be better if the max skill points for each ability to be more like 150 or 200 instead of 100. Also some more weapon and armor options would be nice. I hope this gets into elder scrolls 6, since I'm sure and expansion wouldn't be able to make all these changes. Other than that this game is awesome, I've already sunk 140 hours on my first character and 97 hours on my second.

Not gonna happen. All previous games were capped at 100 in any skill.

There most probably will be new armor, clothes and weapon choices.

There might be new perks (Obtainable via quests).

Try to not focus on your character development and just play the story and explore. Your character will build more slowly.