@The:
/mystery of the week: but how do ice clones bleed? /mystery of the week.
Regarding aging in SS, I've just made it to TBTP in my reread, and all I can conclude is that it's wildly inconsistent.
TBTP takes place a century ago. Back then, hisagi, Nanao, Gin, Byakuya and random science guy were all kids. 100 years later, all adults but Yama, urahara, the Vizard, Unohana, shunsui, ukitake, Aizen, Tousen et-cetera are completely identical. Strangely, Hiyori of the Vizard doesn't change a single bit either.
Yet…in the godawful Hitsu chapter his gradma is dying of old age, and the Grampa kuchiki captain Retired?!?And it brings out all sorts of straaaange shit when you consider that Rukia, Renji and the others are supposed to be mega old, hence their unfamiliarity with the human world -
but they're all from the 20th century, since none of them were even BORN in TBTP!
Rukia at the very least didn'tgo into SS until Byakuya was grown up and married, and given the slow aging that'd make her what, 50 years old? And yet she was supposedly some poor kimono wearing girl in whose sister couldn't take care of her in the awful feudal Japan of Yore.
The aging of people in Soul Society is very slow. So slow that you wouldn't notice any difference among these guys: Yama, urahara, the Vizard, Unohana, shunsui, ukitake, Aizen, Tousen, in a century.
As for the other characters you mentioned I don't see any conflict. Gin and Byakuya are of the same age in TBTP, about 15-looking, and they are now late 20's looking guys. Hisagi and Nanao are about 7 and 12 looking guys in TBTP, and they are now early 20's looking guys. Rukia and Renji might haven't been born yet in TBTP, and now they are about 15-looking guys, just like Ichigo's age. I don't see any younger person who seems to have aged more than an older one.
As for the Ice clone bleeding blood you're saying, I wonder why should people complain there's blood coming out of the clone when in fact the clone itself has other biological stuffs present in it (hair, flesh, eyes, etc.). If you're saying that the clone should remain something like a rigid body (like a rock) in a way that preserves the natural properties of the ice, then I guess that will not be a good clone. The enemy, especially against someone with a good eye, will quickly notice it as fake body (no hairs moving, the muscles are stiff, etc.). It's not like this manga needs to adhere in some real science laws you know.