If your mono-blue deck doesnt use many instants, sorceries, or artifacts, your options for tutors are going to be very limited
Obviously, being physical cards, you can trade and sell these to your hearts content to fund upgrades if so desired
Using cards to buff it will buff every creature you cast while its on the field just as much, allowing you to go wide without sacrificing power
Still, these options offer plenty of potential for exciting mechanical effects, and there's one new addition in particular that I can see being very popular in both Standard and Commander
Many of these cards especially the best colorless creatures MTG like Wurmcoil Engine also have a triggered ability that goes off when they enter the field or when a certain event happens, which can add layers of strategy to your turns