This is proving interesting...
Blocked shadows are mostly a product of underexposure and NOT under development (unless the development is way under). Blown highlights are the result of overdevelopment, or possibly overexpsure or both of course. Considering the brightness range of the carnival type scene (first image), exposing for shadows would have blown the highlights to hell. It is not unusual to expose largely for highlights under such circumstances. I personally would push them as high up the scale as I dared, assuming I could generate the shutter speed to allow for a more shadow friendly exposure. Stand development or reduced agitation...as well as pyro developers all help keep lights and other bright areas under control. He sure as hell did not under develop that neg.....
The second image shown is not terribly blown - not on my monitor. The whites have plenty of detail. It is also on the internet, probably scanned and so it can be hard to know why you are seeing hot highlights. I have plenty of images on the web which suffer hot highlights where the originals are just fine.
The third image...what on earth are you talking about. There is no such thing as the 'correct' exposure and so there cannot be the 'perfect' exposure either. I very much like the pictorial effect of that scene which is painterly overall with the exception of the forground buildings which therefore stand out wonderfully. I think he did a superb job getting an exposure that allowed for that effect. I would be fascinated to hear you talk through how you would have determined the perfect exposure you claim he missed.....
If you are going to comment on exposure, development etc I suggest you learn more about the effect of development time on true film speed (it is decidedly limited).
FWIW I rarely shoot at box speed with D76 or pyrocat etc. I do, however, with FX-39/Xtol/DDX or in some cases just over.
TTL average meters tend to get things right for tarnnie film, but in contrasty conditions will often neglect shadow detail. This is the most common reason for people using an EI different to the ISO rated speed. In flat lighting (where a TTL average meter will tend to set an exposure that still records shadow detail) box speed works nicely. You also mention little of lighting. i can tell you that Box speed, TTL average metering and Afghan sunlight is often a complete disaster. I can also tell you that incresing development ( to unblock shadows - as your previous email suggested) will be an utter disaster as it will in fact push the highligts up even higher. In such cases downrating speed and reducing exposure is the way to go.
In fact it ones EI is only the starting point, compensation being added from there. It all depends on what you are metering for. Some people like acres of black, others like more shadow detail.
In contrasty light I shoot TriX at 250 if using D76. In average light I will use 320. Dull overcast lighting I will use 400. With Xtol i will shoot in contrasty light at 400 and adjust from there.
Yes, it does make a difference.
No, temperature variations of 0.5 degs will make no difference to shadow speed and very little to overall density. Besides, contrast grade changes can normally deal with a slightly dense or flat negs brought about due to dev issues. No grade changes will recover absent shadow detail. many people exposure at lower than box to be sure of shadow detail which they can choose to suppress to black when printing if they like.
It is also worth noting that ISO speeds are determined in lab testing accoridng to specific values. These are a starting point, but can, depending on conditions have no bearing on what you need to rate the film at to get the results you want. If you work in very contrasty conditions, manufacturers times and ISO ratings will be a disaster more often than not. The solutions would be vaguely along the lines of a spot meter, using ISO 400, metering shadows and reducing development or rating ones TTL meter at a lower EI and still reducing exposure.
There are some very good books covering these issues. Edge of Darkness by Barry Thornton is the best book of its kind.
The AA reference is not relevant really as landscapes often have very different tonal requirements to street or other work. AA did nor produce gritty or 'hard' work and his exposure, D&P reflect that.
Selling a number of prints at $200 pays for a lot of film. For some people that is important. might be worth checking what AA and the westons got for their prints when they started out. there is nothing humiliating about selling a print for not very much unless there is an ego in the way. I used to have a rule for framed prints of 'double cost' for those not close enough to get work for free. meant i could be sure to frame another image for free having sold one. Besides, seeing the pleasure people get from one's work and being able to own it is quite something. You cannot do that for free without losing a lot of money!
Rgds