I like the idea of each module being for a particular level set. While I would not go as high as 50th in the first set of modules. The idea is to look at the new rules and "reboot" the Shadow World (for some). Looking at the Tales from the Green Gryphon Inn, we see some very introductory adventures. I think this is where we start.
If we start small we can always grow. One of the concerns that some have with SW it is for "high level characters". High adventure is not always synonymous with high levels. I am sure the kids (1st levels) are just as pumped saving Mrs McKredies' cat and the older Heroes (30th levels) are about closing the gate to the Pale.
So here is what I see needs to be done for character creation. We generate a series of stock characters (Fighter, Priest, Mage, Rogue, etc). We start at 1st level and create the "character packs". Each new adventure they increase in level (5th, 10th, etc). In the Judges material we give tips and hints on how to modify the characters if necessary (training packages, spell list, etc for increased levels). We also give detailed guidelines on character creation. I would recommend using the Buying Stats rules on pave 39 of Character Law (RMU). This allows all characters to have the same range of stats. This would allow a player that REALLY wants to bring a character to do so.
-BP