I think Artifact / Regalia is a good start so that you'll only be able to equip 3 on your hero and I'm going to rework the companion slots down the road so that you'll get another 2 or 3 between them and they'll have a lot more dual slots.
As far as the Bill Gilbert portrait numbering is concerned, I think it makes sense for 1, 3, 6, 10, etc. for playtesting so that you get more tomes sooner and can double check them to ensure they work. Whether it stays that way down the road, I'm not certain.
I'll try to get an update soon, I'm in the process of implementing the spell system and so have made a lot of changes to the spells that I need to test and fix bugs, etc. I haven't fully implemented all the tomes yet, and so that is another area where a lot more work needs to be done so I'm starting to get to the point where a lot of work needs to be done to implement some of these new features, but I am making progress.
I'd like to get the start variability changes released, though, so that people can simply try that part out - hopefully soon as I want to also apply that update to AP.
There are quite a few differences between AP and CW and so it is hard to keep them synchronized, but I do try to implement changes in both where I can with the same set of files...
/C\/C\