Let's look at the base cards first.
I always gravitate towards action photography when I look at cards.
Who doesn't like a guy jumping over a player sliding into second.
Or a cool broken bat shot.Out of the few action shot cards that I deemed scanworthy only two of them were vertical.

..and only one was horizontal. The blue background makes the gray and red of the uniform stand out more.
I guess the main reason why I like these types of pitching cards is the pose of the pitcher right before he throws his arm forward. This is one of the most aesthetically pleasing of the horizontal shots of pitchers.
It seems like the release and follow through of the pitching motion is usually captured as a vertical card like this one of Jamie Moyer.

It's one of those diamond variation cards. I don't know if it's obvious but the player isn't all diamondy, just the background. I can't get over the blurry figure in the outfield. The diamond treatment doesn't work out well for the background figures.
I'm not wild about the diamond replacing the team logo at the bottom right of the card because mainly I really like the way the team logo is encased in a circle. I'm a little iffy on the arch that contains the players name, but overall I like the base set design a lot better than last years set.
I don't think that I have seen many cards of a pitcher in the beginning of his windup until now.
I think this card is the first one that I have pulled of a rigor mortis impaired pitcher.In addition to the action shot cards are the ones that I find unusual.
These two cards are what I think are unusual and stand out when I'm going through my cards.Two different treatments of candid shots. The team card of the Red Sox is a nice candid moment captured on a card, but the Jefferies card is just bizarre. A candid shot gone wrong.

Since I haven't shown off the back I'll use the Jefferies card as my example. I picked this one because of the little confused head in the upper left of the card.

In addition to the diamond card I pulled one of these Topps 60th anniversary thing of Lou Gehrig.

These are pretty nice. I thought at first that these were the CTYMTO cards. I guess in a way it's similar. The Musial is a "lost card": a card that was never made, but should have been.

The 1972 Carew cards is a little different. I know it's a reprint of his card, but I don't know how it fits into that subset. I'm guessing that they have one card that represents each year and they decided on Rod Carew for 1972. Hey that rhymes.

Diamond Duos card of Utley and Rollins. A replacement of Legendary Lineage perhaps?

I was wondering why everybody was mentioning the Toppstown cards online and seeing them in person I now know why; They're pretty nice looking this year. I don't collect or redeem Toppstown so if anybody wants my codes let me know.

I pulled one of these Diamond Giveaway cards that I'll try to redeem at some point in the future.
Lastly the one subset that I really do like.

The Kimball Champions inspired minis.
This card was a bit longer and wider than the other minis that Topps offers like A&G. The border is the difference in sizes. So not as big as Mayo, but still a little bigger than other Topps minis. It could be that it was cut a little bigger, but I compared it to 4 different A&G minis and they were all smaller than the N184 card.
These cards are going to be in each series as well as updates and highlights a la 2009 Turkey Red. Out of all of the cards offered this is the one set that I'm really really interested in. I'm going to try and get as many of these minis as possible.
I realized last year that rack packs were the best at giving me a random assortment of inserts and base cards and I when I go retail I'll probably stick with rack packs. I'm looking forward to seeing what the hobby packs have to offer. I'm still on the fence about getting a box of these cards. I think it might be more fun to try and go for the whole set by getting packs as I feel like purchasing them rather than going all out and trying to finish it as quickly as possible. This base set looks like it will be fun to try and finish.