During the preparation of my soon-to-be-released Talisman expansion, I have asked myself a question: How many cards of different types should I include? Will the proportions be different for Adventure, Highland and Dungeon cards? To make the creation process easier, I have counted all the Adventure cards from Talisman and all expansions (except Blood Moon).
The result might make it easier for you to keep the correct card proportions in your expansions - but of course no one will keep you from changing the proportions, if you think that it will benefit the gameplay
Yet another question was concerning the difficulty of the expansion - Is it too easy or too hard? Are there too many negative cards which will spoil the fun, or too many positive cards which will get rid of the challenge and make the game boring? Once again I have counted the cards from Talisman and its expansions (again, without Blood Moon) and divided them into 5 different categories according to their effect on the Adventurer:
Very Positive - strong magical items, cards with positive effects only
Positive - useful items, random cards with a higher probability for a positive result
Neutral - Almost useless items, Enemies with S/C of 1-3 ("easy prey"), random cards with an equal possibility for a positive or negative result
Negative - Enemies with S/C of 4-6, random cards with a higher probability for a negative result
Very Negative - Enemies with S/C of more than 7, cards with negative effects only
I hope it will be useful for some of you!