Correct me if I"m wrong but the current dynamic to Alexander offers no reason to do the first three stages after you've obtain your token for the week? This feels like an oversight that could be fixed with adding the ability to obtain more tomes and maybe even Centurion seals after you've obtained your item for the week.

Maybe something like 80 law tomes and 20 Centurion tomes for completion once you've obtained your token in x area. This way even after a player has obtained their token they have a reason to continue doing the stage and maybe rather than make it a straight 80-20 for each stage it could chance where

Stage 1= 80 tomes, 20 centurion
Stage 2=40 tomes, 40 centurion
Stage 3=20 tomes, 60 centurion

This way people can decide which they want more of, if they want to farm tomes and do it with Alexander they can spam stage 1 after they've obtained their token. If they want Centurion seals they can do Stage 2 or 3.