As we all know - there are a lot ideas for new credos, some of them are really cool ideas, but adding more and more credos - making game more and more unplayable.
Please let's not speak about abusing mechanics with credo questing by dying, or speaking about completing this quests just by grinding - there are a lot of time for each credo, and some time you will require more time than you can afford.
My idea is simple - let some cloth sets give credos or buffs from credo if you dont have it's credo.
Just for example - there are lot of items named druid's, farmers, etc.
Make rule that if you have all the items equipped - you will get bonuses from some related credo.