Right, firstly, nice observations! I agree with you, and it is common/normal for the lateral sides to be more sloping, esp in fore feet & not necessarily a problem. Agree toes are long all round & agree with your obs that you think the ridge of sole extending around the frog apex should stay. Don't know about any research done on that specifically, but it is common in heavy breeds(is he Friesian?) & I surmise that it's to give more support under the sole of big heavies.
Sole pics are necessary for a more accurate idea. Can't give more than rough guess without. Toes appear a bit long all round, esp it seems, the left hind. Front heels appear too high. Notice too that you can see the daylight under the left fore, in the pic of the left hind heel. Poss not a problem if horse is always on yielding terrain, but is obviously very peripherally loaded on concrete. And if on hard ground & for whatever reason can't lower heels, I'd consider using frog supports for a while.
Can't tell for sure without sole pics etc, but it appears that the fores at least, are more flared on the medial sides. Can you see the difference between the *sloping* wall on the lateral side v's the *flared* inside? Assuming it is as it appears, I'd be thinking the internal structures(pedal bone) is dictating that the lateral side 'should' be like that, due to the way horse loads his feet, but that the medial side flares need treating.
Well at least someone likes me! LOL. I always consider self trimming a really good thing.
Hey I like you too fluffy!
...& agree with most of what you say, most of the time. I do however think that using a 'trusty angle thingy' is a dangerous habit to get into & with only those pics to go on, I'd hesitate to say anything at all about angles particularly. Excepting that hairline angles give some idea too as to how much/little to 'respect' apparent pastern/toe wall angles.
Re balance & camera 'distortion' it appears that the medial right fore heel is higher than the lateral side, but the heel shot of that foot shows it's possibly skewed the other way, or that the camera is on an angle. If that hoof is more skewed, it's also very possible it's a body issue & it should stay that way, at least until/unless a bodyworker makes it otherwise. Re 'self trimming', body issues are probably relevant there too, as you haven't trimmed hinds & RH looks pretty good but LH looks long in the toe/too sloping.