Good to see you back!
Looks good to me. I like the Fiendish Gifts (Psychopomp sounds awesome!).
I can not really asses them in regards of 5E rules, though.
I realize that you haven't posted anything in a while, but I was wondering if you were still interested in finishing this? I'd love to use this in a campaign, though I'd be making some changes. Would you be ok if I used this?
Hey Codfish, welcome on Planewalker.
Quickleaf hasn't posted here for a while, but he's quite active over at EN World. It probably might be easier to contact him over there.
Personally, I don't think that he would mind, if you used elements of the 'Codex' for your campaign. I'm sure he would be glad about your feedback, though. ;)
Here is his response, when I requested the same, some time back:
If you don't mind I'd use a customized/supplemented version of "The Codex of the Infinite Planes" as the base frame for my next PS-campaign.
The current campaign has been runnig since 2007 and as I plan to finish it in the coming 1 or 2 years I have to plan ahead! ;-)
Maybe I could provide some playtest feedback and new stuff I've used to fill the current gaps.
@KnightOfDecay Sweet! Yeah, I'd love to hear how you adapt these ideas for your group! There's a TON of gaps in the concepts that I'd be excited to see how you fill it in and make it your own.