I really like this game for a few reasons.
1.
No bumpers + elimination of most robot size constraints. We're going to see some really interesting and unique robots this year, the likes of which hasn't been a part of FRC in over a decade. If people thought that most robots in 2014 looked the same, this will be the year of massively different (and potentially just massive) robots.
2.
Little direct interaction between the two alliances. For a stacking game, this is a must. Anyone with memories of 2003 remembers what a stacking game without protected stacking areas was like.
Last year was a very defense heavy game, so it's refreshing to have a very offense heavy game.
This also means that generally most of the "rules of thumb" of FRC can be thrown out the window and you can use a blank slate this build season (or at least re-evaluate every thing). Generally most years, you design and build a drivetrain and chassis, then put the robot on top of that. This year you can design your mechanisms, then stick your drivetrain around it.
3.
Relaxation of more robot rules. Unlimited Mini CIMs? Yes!
4.
Hugely varied game elements and objectives. Coupled with #1, this will lead to a huge diversity in robot designs, along with specialization of strategies. The lack of defense also means that most teams who build robots that work in their shop should also work on the field; in most other years robots struggle with even the slightest bit of defense.