Not playing 4E at the moment, but when we did, the DM added a house rule that an action point could be spent to regain a Daily or Encounter power. This seems to at least partially address PS's martial Daily issue, but it uses up a resource to do so.
The problem we experienced and why the house rule was added is that the Wizard could not Fly multiple targets or Dimension Door more than once per day (whereas the Eladrin could Fey Step multiple times per day). Even a Shield spell is for a few seconds per encounter.
Of course the house rule above is more balanced for Wizards than Fighters. Most Fighters would almost exclusively use it for Daily powers whereas Wizards would often use it for Utility encounter powers.
I am currently trying to put together a set of house rules to make spells feel more like spells (i.e. have decent durations with or without sustaining, be castable multiple times per day, etc.) for the next 4E campaign we run.
I like many aspects of 4E, but I dislike the fact that spell casters feel like warriors. Every problem is a nail and the spell casters have so many hit for damage spells. Magic is no longer special, it's just another power (and often a hit point damaging one at that).
