doctorbadwolf
Heretic of The Seventh Circle
Nope. Pretty sure I listed all of them out. If there's anyone who has a misunderstanding here, it's you. You seem to be doing exactly what I warned of: assuming the pet has to be a stand alone combatant on equivalent footing as a stand alone PC. That's wrong. The subclass has to be balanced with other other subclass, and that's what I did by the comparison. You're also flawed in that you seem to be focused on combat only when you get many other benefits out of combat that the other subclass does not get. Those things matter. And you also have a misunderstanding on how math works in combat. For example:
Not at most. At least. It takes at least 24 points of damage. And since we know that attacks rarely do exactly the hp total, a higher potential is protected. For example, if a monster does 10 hp of damage every round, it takes all 3 round to kill the pet. 30 points have been protected. And that's assuming every attack hits. Many will miss (especially if said pet is dodging). That sucks up even more attacks that would be directed otherwise at party members. And that's damage absorbed without anyone else having spent any other resources.
I said long rest because anything of significant time more than a short rest is usually practically applicated once per day (it's not likely you'll go through more than one pet per day). Although, technically you don't need a long rest at all.
The pet dies, it takes 8 hours to get it back, meaning you get it back less often than per long rest. It's pretty simple. Most groups aren't going to want to wait 16 hours for you to get your pet back and take a long rest.
It also isn't balanced, at all, to have a benefit that isn't actually stronger than other subclasses, where you can lose literally your entire subclass for at least the rest of the adventuring day, because a fireball killed a wolf.
As for focusing on combat, that is what is being compared. I did acknowledge the exploration benefits. They are less than the Find Familiar spell. By a significant margin.
A creature with HP roughly comparable to the lower HP classes, and at-level attack and AC numbers, with less damage at most levels (until it gets to attack twice, a wolf is a couple points higher damage than a rogue who isn't getting their SA and has no way to get a second attack, because it adds your Proficiency mod to damage. Which means it does much, much, much less damage than any member of any class does per round, as it should.), and nothing else, is objectively not comparable to a PC. It's that simple. If you can't admit that, there's no point in continuing this. 4 times ranger level HP is not comparable to a PC, which means that the pet loses defensive power as you level. It doesn't maintain it's power level, it gets weaker and weaker.
PC HP by level and monster damage by CR are tuned to eachother in a rising scale. The pet has to either have HP that allows it to survive monster damage at a given level, or the ability to be regained (whether the same pet or a new one) more easily than effectively taking a 16 hour long rest, or it isn't capable of being more than a liability in combat. It is that simple. At higher levels, even tougher pets can insta-die on a successful save against a trap or AoE that isn't even aimed at them specifically.
With a creature that is very clearly intended to participate in combat, this isn't working as intended.
For further evidence, see how they've built pets for subclasses since then. They avoided it for a long time, and now they have provided pets that have a decent chance of survival on successful saves, can be regained by spending a level 1 spell slot, and accomplish their goals using much simpler rules.