Different colored card backs, how do you feel about it?

Hi,

I'm planning a game in which players use both a Main Deck and a Resource Deck. Resources are placed face-down onto the field and must first be “conquered” by flipping them face-up before they can be used.

I also want to include a Trap/Trick card type. These cards would be placed face-down like Resource cards, and when the opponent flips them, they suffer a negative effect.

Currently, I'm planning to give Main Deck cards a different card back from Resource Deck cards. This would help prevent players from secretly adding Resource cards into the Main Deck. The main format uses a singleton Main Deck of 50 cards and a separate Resource Deck of 30 cards.

Here is my dilemma:

I do not want Trap cards to have the same card back as Resource cards, because that would force players to choose between playing actual resources or sacrificing resource slots for Trap cards.

My current solution is to allow players to also include Resource cards in the Main Deck. If they do, they simply reveal that the next card they draw is a Resource card (or a Trap).

I would also add some extra rules. For example:

“You may play the game with only one deck. If you do, draw 10 cards instead of 6 at the start of the game.”

I think this could create interesting asymmetry and alternative playstyles.

My question is:

How would you feel about a system like this? Is it something you would enjoy playing?