I disagree, trying new cards and different tactics and different maps all require an adjustment. The gold cords aren't necessarily the best for every mission free to play games thrive on player customization. It would be extremely interesting to experiment with different cards at will and as far as "longevity" I don't see how that trumps game experience
Don't mistake my reply as what I want, but Mecurysteam have made it clear that they value extensive grind walls over open gameplay experimentation.
Not only do we need to grind for weapon blueprints, but we need to pay gold for them and forge costs continue to increase. And then you have to upgrade the weapons and repeat the entire process over again, including the exorbitant gold fee.
Do you really think the developers that would use this crafting system actually want you to play their game easily? Instead they will use the most obtrusive RNG mechanics possible to force players to grind literally everything the game has to offer hoping to wear them down eventually and encourage the use of Mercury coins, which is ironic considering that they only have 2 things you can actually buy with them (gold and skins).