Some of the stuff you say is true, most of the stuff you mention is personal opinion but you state as facts.
You are powergaming, which is fine for pvp-oriented or competitive games, but it is pointless in a single-player role playing game, unless you like that sort of thing.
I play on master in a completely different way than you and haven't had a single problem. I even completely ignored enchanting, alchemy, and smithing.
There is no such thing as an ideal perfect build.
I think you'll find most of the stuff you say is personal opinion, for starters yes you can hit the AR cap with anything, but that though abuse of the system dragonscale still has its worth if you don't intend to do that, more so then say having 10% better prices when all you really need is 1.5k extra gold perks, without the buffs it'd still remain easy to bankrupt merchants.
Good inventory management habits? you mean looting less then 10% of anything in a dungeon? Personal choice of how you feel on completion, leave the sly backhanded insults out of this.
I find most of the perk trees useless tbh, or at least 90% of the perks within the tree, great spending a point in smithing which you have a finite number of and it only really sees the one use in making and upgrading your set of gear. Should have been quests instead to learn from other blacksmiths, simalar to how you already do for some in the game. I dislike the seperate reduction ranks in magic and lockpicking schools (novice, adept etc.) more so because you need to take at least the novice on to get where you actually want to spend the points. The restriction on abilities (see some items in pockets, focus when aiming etc) should have remained tied to skill levels, being a master in most of the skills 100/100 points has been left kinda hollow by the sheer number of perks theyve squeezed out. I wasn't a huge fan of fallout perks, but they done a far better job of actually feeling like bonuses and not half bothered ways of introducing teaching to the game (where is my hermit blacksmith that is a touch crazy but is the only person who knows how to work dragon bones), broken flows of skill though needing to take skills you don't want because for some reason theyve been shoved into the opposite branch they should have been in, and restrict gameplay rather then enhance or be a choice (instead of 50% less cost which can be achieved across of schools and ranks with enchanting anyway, perks to enhance certain types of conjured pet, make them more permanant, permanant wolf etc, change it's skin to a different color or even a different model, your familar is now a troll)
And yes there is such thing as a perfect build because the are so many perks that are meaningless, they add so little to gameplay (30% better prices again a great example where it doesn't add anything to gameplay if anything more annoyance cause you can sell less to a merchant then usual). Admittedly the "Ideal Build" so to speak is more about avoiding certain perks, not "wasting" them (whether you plan on heavy or light armor take the heavy armor smithing path, you get far better weapons and a choice with either dragon armors, shame about steel plate being in the wrong branch if you wanted that).
To Noxious yeah shame they felt the need to split those 2, why add a new tree when you just streemline and remove 3, how about acrobatics for a 6 thief skill, give me back the fun that was roof climbing in oblivion (admittedly the cities don't lend themselves as much to this but it would have been nice anyway)
To Merari I've taken only the heavy side and been able to make dragonscale, so unless it's a change in 1.2 which I haven't installed to "fix" a perk giving you all it says it does when you take it, in which case how about making them seperate next time, there seems to be no such restriction on how you get there, just prevents you from continuing round the circle into taking say glass or daedric armors.