Blech.
Start with a balanced offense/defense creature. His example (massively boosting hp while leaving everything else the same) is the safest of the alterations available, and even it has a downside. Namely boredom. It doesn't show up all that often in tabletop games *as such*, but in CRPGs, facing off against opponents with WAY TOO MANY HP and wanting to go afk while they get worn down is all too common. Remember, boosting an encounter's duration means you decrease your maximum per-round damage inflicted on the party, and even if the party is close to empty by the end, you still lose excitement in exchange for an irritated "why won't it just die already". Whittling people down, even if it almost works, is rarely intense.
Massively boosting offense, while leaving the defenses untouched, isn't intense either. One round later its all over. No time for tension to build.
Start with a balanced offense/defense creature. His example (massively boosting hp while leaving everything else the same) is the safest of the alterations available, and even it has a downside. Namely boredom. It doesn't show up all that often in tabletop games *as such*, but in CRPGs, facing off against opponents with WAY TOO MANY HP and wanting to go afk while they get worn down is all too common. Remember, boosting an encounter's duration means you decrease your maximum per-round damage inflicted on the party, and even if the party is close to empty by the end, you still lose excitement in exchange for an irritated "why won't it just die already". Whittling people down, even if it almost works, is rarely intense.
Massively boosting offense, while leaving the defenses untouched, isn't intense either. One round later its all over. No time for tension to build.