I have to admit I'd gotten pretty spoiled by HeroLab while playing Pathfinder.
Not just creating the character, but being able to search for words in the description of feats is a huge benefit. "Which feats deal with sneak attack," you ask? No problem, bring up the feat list, and type sneak attack in the box. Instantly, there's your answer... from a list of nearly 1000 feats from dozens of source books. Spells too.
But aside from that "modern" functionality, I've always liked having a neatly printed character sheet that I could reproduce quickly in case of spill, pet attack, or other emergency. Even back to the days of listening to the high-pitched buzz of my 9-pin dox-matrix printer attached to my Apple ][e.
Having to go back to a hand-written character sheet when 5th Edition came out was quite the trip down nostalgia avenue, and it surprised me that creating a character by hand for even a system so simple as 5e still took almost an hour of reading, writing, cross-referencing, erasing, re-writing, etc.
I would LOVE LOVE LOVE to have my hands on MagicSN's work!
Especially because of Realm Works.
C'Mon, WotC, don't force us to use YOUR pencils and paper to write our sheets! If your solution is worthwhile, people will use it - but let others have a go also.