I think the problem I have with that reason Aegeri is that if having a surge's worth of temphp is that valuable then what about the parties that don't have access to that power?
The other point was you cast it before combat, so there's no issue with 'fireball formation' or wasting a standard action, the thp is always there at the start of every fight
Then you're attacked or run into trouble within 2 rounds (12 seconds) or so if it wearing off. Starting with a trap, skill challenge or similar that leads into a combat encounter. The power wears off and due to no short rest, the party cannot use it again and runs into trouble instantly. Alternatively, they need to bunch up and monsters that are invisible/hidden/lurking about jump them when they move together. A surprise round bombardment would deal a great amount of damage. I mean, it really isn't hard to deal with this simply through good encounter design, that to be completely frank I'm going to be doing
anyway. I frequently like skill challenges and other difficulties before encounters. These can be up to 30 minutes in "real game time" in length - so there isn't going to be a short rest to recharge and keep spamming it during that anyway (Forcing the PCs to lose it before a combat anyway). That's not metagaming to spite the power,
I do this anyway.
Again, if you're going to nerf that then why not just make it a daily and be done with it?
I don't have to nerf it though. I'm actually not really that worried by it in the first place.
I don't think the presence or lack of a single power should be having that large an impact on how every encounter plays out.
It really doesn't bother me because the damage monsters can do is ridiculous now. You can tear down a 250 HP Barbarian in a couple of rounds these days - not to mention brutalize the rest of the party while you're doing it. It's a pretty overpowered spell, but it doesn't bother me in the least because monster damage keeps up with it. They will, at most get maybe an extra encounter out of it and that depends if it even works.
but they were such huge advantages that basically every encounter was either built around foiling them or became trivial.
The problem here - plus I actually know this from experience - is that it's only going to buffer the onslaught now. It won't trivialize any encounter, because creatures
hit hard enough. The original BRV fighter was in his prime during a period where 1d8+9 was considered "epic" damage. I wonder how he would stack up now, probably pretty well actually.