Well keep in mind that not all color pairings are meant to do the same things. Just because
Bant doesn't have the aggro of Jund or destruction of
Grixis doesn't mean that it isn't strong in it's forms of support and protection. Strength can be proven by how you demonstrate you power is a matter of choice and perception. I feel that a Zombie Esper (U/W/B) deck that can drain 4-5 life per turn is STRONG compared to a
Naya deck that might pump out 6 CMC creatures every turn for low mana costs through cost reductions or mana ramps. Lets focus on this deck an make it as strong as can be. The
development of this deck and watching it grow will help with your deck building skills.