For the near future, not at all. For the mid future, you will have to earn more exp to gain skills, in essence it will take you about 20x more exp to get 10 skills up to 100 as it would 5...while people may see faults with this and how some have heard it will work, it will work well, the issue is some of us have thoughts of adding a very specialized field after a certain point so as you become really good, you can really micromanage what it is that you do.
This would alow you to still noticeably progress, but with big limitations.
So to answer your question/statement. No you will be able to master everything, and I would love to see guilds create champions for themselves...the entire guild takes time and effort to make one character really really huge, the character is on 24/7/356... at least this way we will know when we need to add stuff for the high end players :-) and no, we will not keep up, but we might be closer then many games have been.