I will say that based on Emerikol's last post what he wants in terms of what HP are and how healing works isn't 'AD&D' or D&D as it has been ever written.
As to 'Appease all Playstyles' I'm pretty sure the consensus is that it was a sysaphian task to begin with - Failure is assured the only question is how noble the attempt.
Two different things here.
First, you have to appeal to "enough". Nothing will ever appeal to everyone. It is the causal disregard for other tastes I find repetitive here.
Second, if a prior edition of D&D was close enough for E, then it will be fine.
If no prior edition of D&D did it, then all bets are off. They didn't say "anything anyone can imagine", they said "all prior editions styles". (the quotations are paraphrased)
It would still be good to appeal to as many as possible, but they won't be failing to keep their word.