Using the tip on the first page, and following patterns, I've managed to max out to level 255 all except for the four I haven't unlocked (Toon Zelda, Medli, Ravio, Yuga). I'll get those when I unlock them, which I'll be working on once I have money again (I just happened to be maxing out my rupees again and figured I'd post these blocks.)
Warning, I don't know to what character they go to. I have a hunch that one offset higher (so 00033590 if if the value was 000335A0) is the outfit the character is wearing as it's identical with nearly every character. But, here's the blocks I've found and using them I've leveled the previous list all to 255, complete with hearts and strength properly through the game:
3308C-3308E
330BC-330BE
330EC-330EE
3311C-3311E
3314C-3314E
3317C-3317E
331AC-331AE
331DC-331DE
3320C-3320E
3323C-3323E
3326C-3326E
3329C-3329E
332CC-332CE
332FC-332FE
3332C-3332E
3335C-3335E
3338C-3338E
333BC-333BE
333EC-333EE
3347C-3347E
334AC-334AE
334DC-334DE
3350C-3350E
3353C-3353E
(I suspect 3356C-3356E is a value for someone who I haven't unlocked yet, as there's a bunch of 00s there right now)
3359C-3359E
Setting that block to "D9 F5 C3" and killing one mook gets the characters to 255. Will report with the other characters as soon as I have them if someone doesn't beat me to it.
With that I have 20/24 characters "properly" leveled to 255.
Hope this helps with the editor and anyone looking to max out their characters. Sorry I don't have names, but I'm guessing they're going in descending order starting with Link.
I can confirm this is all correct, having done it all manually, though I too do not know which corresponds to which character aside from a few I used to initially find them, but the descending order theory seems to fit the pattern. I will say, if you max the EXP of a character you don't have, it will be undone when unlocking them, but with no immediately visible ill side effects, just something to note that it won't do you any good until you get them.