I must admit I am excited to see that Ferrari and Mercedes look to be quite even. The Ferrari looks like an extremely well-balanced car, which I'd say probably puts them at a long-term advantage. The Mercs clearly have the grunt, but the car looks more unstable. I'm hoping RB can make up some pace with the looser engine development rules. But as you say EVH, these big rule changes only widen the gap between the teams with huge resources and those without. Over time it evens out as the big teams get diminishing returns, secrets are shared and people move about.
Also, I'm quite liking the state of the DRS. It appears to enable the front runners past the slower cars, but the front runners aren't sailing past each other anymore. Forcing the drivers to make overtakes in the braking zones, which is much more exciting.