Undrave
Legend
I think players who use Short Rests (especially for healing), would give pause at the loss of a single Hit Die.
And we're back to the point where a Healing Surge has the same value for a Fighter or a Cleric or a Wizard. If you're in a party with lots of spell slots available for Healing Spells or who stocked up on Healing Potion, then your hit dice aren't worth anything, but if you don't suddenly they're extremely precious.
A 4e Healing Surge is always valuable. It fuels your healing regardless of source, it can be expended for certain things (Martial Practices, some Rituals, I think some Magic Items even spent Healing Surges!) and there is basically no class combination that can ignore them. But they also completely recover on a long rest. Your Healing Surge are your REAL hit points in a way (with the right tweaks you could make your HP per encounter VERY low, making fights dangerous, while still being able to keep going because you had healing surges to replenish this little pool, making your daily HP and encounter HP two different amount!) , they're the countdown to how much you can exert yourself during a day and everybody's on the same clock.