Marks

It would be very nice if instead of having individual numbers of marks for each Dino, to have one big number and use those marks everywhere. I do think that people might play even more if they can use a fast, scouting dino to earn marks and buy things for a slower, tankier Dino. To only worry about growing each individual dinosaur and not about farming marks so much would make the Game more playable.
If It becomes too abusable, then lowering the worth of the quests would help. Maybe instead of getting 50 marks for a quest, getting 40 or 35.