Er...how would fixing this take 25-30 pages of errata?
All it needs is to add two words in parentheses when defining the con-based h.p. modifier: "minimum +1".
I think they could fit two words in there somewhere.
Ugh. Really? Okay... let me explain this the long-winded way since people are not getting it.
The errata document right now is for editing errors only. That's why it's short.
As soon as we start putting in "rule clarifications" into the errata for every single rule that "should be" corrected (as was demanded by our OP when I commented off of him in the first place)... pretty soon your errata document will SWELL to around 25 to 30 pages (if not more) to include every single little freaking rule "tweak" demanded by the nitpicky "Only Play RAW!" community so that there's no dispute or interpretation over any rule in the game ever again.
Just like the 4E errata document swelled to become a massive beast that pretty much became an
entire extra rulebook that people had to keep lugging around so that they could cross-reference every single thing. All so that they could "Play RAW!"
Because if you honestly think THIS situation here... this obscure, barely ever going to come up situation that says "Hey, if you have a negative CON mod and you roll your HP and it ends up being less than 1 hit point, you still gain 1 hit point"... and you think THIS warrants being written down in an errata document... then those people who believe that are going to demand every other rule-- ones much more likely to actually occur-- to get added too. And pretty soon we're right back to where we were with 4E... an errata document so large that yes... could get upwards of 25 to 30 pages.
Or you know... you could just
ask your DM to let you have a minimum of 1 hit point if you choose to roll and you end up rolling poorly. You know... like the other 98% of tables do when certain rules in the game don't seem to make sense or play the way they think they should.
I'm sorry I didn't get this "clear" on what I meant the first time... but silly me was giving people credit for being able to figure what I meant out. I won't make the same mistake again.