Well I also go a website called mythicspoiler.com I watch as the new cards are spoiled and released and I look at the forum posts on that site as well with various people's opinions on them. Me I look at the set in its entirety, I follow the storyline and I think of the colors as their own separate bodies. Every color combo MEANS something; R/W is zealous and dynamic. Think Spartans but more Egyptian in this set. B/G is graveyard related and finding life and growth in the death of others. Like a composite box for gardening. W/B is all about the
balance, like the sands in an hour glass. Eventually depending on the flow life flows from one end to the other.
Me myself I have been reading the stories following the set, learning the characters, looking at the cards and their tribes, the set mechanics that are introduced, how my main 20 color combos (the 10x Dual color guilds of Ravnica, 5x Tri-Color Shards of Alara and 5x Tri-Color Khans of Tarkir). Once I know how the deck is supposed to behave based off the colors I can then add cards that would be better geared towards that deck's particular strategies. This is more of an in depth way that I do deck building.
Also at all my pre releases I always build a 60 card deck. At the last Amonkhet pre-release I won 1, Lost 1 (due to a overtime technicality), and tied 2. So that evening was the very definition of "
breaking even". But my deck, Which was a
Grixis control/Mid-ranged Zombie prowess deck fought very well against and tied against the W/U control tokens, the Rakdos Zombie tokens with
lord of the accursed (that I loss to), tied also against the R/G Exert deck with Hazoret, and actually won against a Mardu Zombie deck. The size of the deck isn't always what matters, it's how you run the deck and what strategies you use to get what you need from it.