I like it, even though I don't care that much about the time it takes to gain a level. These boosts enhance my play. I would not object to an off switch ... but I wonder whether implementing individual toggles are worth the hassle to make for time limited world properties.
Originally Posted by TheBor
"No sadder words of tongue or pen are the words: 'Might have been'." -- John Greenleaf Whittier
"Do or do not. There is no try." -- Yoda
Indeed, in a world and life full of change, the only constant is human nature (A is A, after all :P).
We old vets need to keep in mind those who come after us.