Every SA book has been longer than the previous one, and I think Sanderson mentioned that the Rythm of War paperback, at the time when it released, was pushing the limit of thickness that the publisher was able to print. These are chonky books indeed.
Oh wow, that seems like a major oversight. Imagine in the beginning of TWoK it would have just skipped straight over the prelude and you never got to see the breaking of the Oathpact.
After finishing WaT today (what a finale!), I was utterly sad thinking about how long it will be until we get the next one… Well I guess time for more rereads then!
What about Wheel of Time? It‘s so long it might keep you occupied until Stormlight 6…