I attended the Hungarian GP last year, more by happenstance than anything else, and I can happily report it was great to watch live. I sat behind the last corner which gave me a good view of the cars coming into the final complex, and down the main straight. Over the last laps Rosberg was closing visible amounts of distance per lap. A couple more laps would have been interesting.
Nonetheless, I got very lucky. Hungary in the dry is inevitably a procession. Considering the tyres are more durable this year passing will be even harder, the only hope for a decent race being someone other than Mercedes leading at the end of lap 1.
So, in order of likelihood for a good race:
Self-inflicted issues for Mercedes
Williams/Ferrari/Other jump Mercedes at the start
Rain
Rosberg leads Hamilton into the first corner