I really cannot comment on neither the overall value nor the flexibility of those cards but one thing to keep in mind might be the format you want to play. If you plan on sticking solely to standard, consider when the cards rotate out unless you somehow are able to accumulate vast amount of dust.
Yeah, I'm getting this one too. Deleted both auras as well as saved variables before importing the versions released a few days ago, no change. Let me know if you need any additional info.
Great work you're doing, though.