It seems like you've already started to clue into this concept, but focusing your theme into one specialization (instead of splitting your cards across auras, equipment, and exalted creatures) can allow you to leverage that specialization to a greater degree and generally make your deck more consistent. As an example, if you draw a bunch of exalted creatures and Thran Power Suit, the suit feels pretty useless. Similarly if Sublime Archangel is the only creature. Powerful cards that are underutilized because the deck's strategy is split trying to do too many things at once.
(As a small aside, it is totally fine to have a deck with split strategies if that's what you enjoy. Don't let internet strangers like me bully you into thinking that there's only one way to build a deck)