This is a bit of a crazy idea that just occurred to me, but would it be possible to combine the two?
Let's imagine that the 5E wizard gets a very limited number of spell slots. Say, two at first level, and no more from intelligence or whatever. However, the spells he can put in those slots have a varying amount of uses. A magic missile prepared in one of the slots could be used at will, as long as he prepared it that day, but a spell like sleep could only be cast once per day for each spell slot it was prepared in.
This would allow the wizard to customize just how he wants to use his power. Does he want to prepare a lot of at-will spells so he has flexibility throughout the day or does he want to hang back and save his slots for some big daily spells? It would also work around the somewhat arbitrary daily restrictions spells had by giving you a price to pay if you wanted to use them more often.
Just a thought.
Let's imagine that the 5E wizard gets a very limited number of spell slots. Say, two at first level, and no more from intelligence or whatever. However, the spells he can put in those slots have a varying amount of uses. A magic missile prepared in one of the slots could be used at will, as long as he prepared it that day, but a spell like sleep could only be cast once per day for each spell slot it was prepared in.
This would allow the wizard to customize just how he wants to use his power. Does he want to prepare a lot of at-will spells so he has flexibility throughout the day or does he want to hang back and save his slots for some big daily spells? It would also work around the somewhat arbitrary daily restrictions spells had by giving you a price to pay if you wanted to use them more often.
Just a thought.