The DNC emails show that the DNC actively nurtured relationships with reporters that went against the basics of journalistic ethics. They show that the DNC coordinated with the Hillary campaign to come up with good anti-Bernie stunts (planting an audience member to, i.e., ask if he believed in God). They show a consistent and far-reaching effort not just to "favor" Hillary, as you say, but to ensure that she would win -- whether by bullying the press, planning "counter" events, or propagating narratives about the Sanders campaign being weak and disorganized.
This is in direct violation of the DNC charter:
In the conduct and management of the affairs and procedures of the Democratic National Committee, particularly as they apply to the preparation and conduct of the Presidential nomination process, the Chairperson shall exercise impartiality and evenhandedness as between the Presidential candidates and campaigns. The Chairperson shall be responsible for ensuring that the national officers and staff of the Democratic National Committee maintain impartiality and evenhandedness during the Democratic Party Presidential nominating process.
This is far more interesting than Munich or Tim Kaine.
Well, "interesting..." Is it more interesting than the fact that the candidate can't follow secrecy rules? Is it more interesting than the fact that those rules are so unreasonable that it's been decades-long implied policy to ignore them? Is it more more interesting than the much more blatant partiality in the only opposition party when it comes to picking candidates (not that I blame them)?
So, the DNC was caught politicking. It's perhaps not very nice, but is it surprising? Is it illegal? Is it particularly egregious? Frankly, if the worst they did was prefer clinton over sanders, they've got surprisingly little dirty laundry (or, more plausibly: they don't email about particularly questionable ideas).
None of this sounds like a conspiracy; it sounds like business as usual, and rather boring at that - at least to most people. If you're in a position to affect the composition of the DNC, perhaps it's little more relevant. And if you support(ed) Sanders, you might feel justifiably angry (although planting audience members to ask questions that are bound to come up in the election proper anyhow doesn't really strike me as high up the scale of nastiness). And of course, perhaps there's something else in those mails that is newsworthy.
I think it is worth noting that the Clintons have been deeply involved in the Democratic party for a long, long time, so it isn't awfully surprising there are personal relationships there.
The other thing I'd note that all this was also true when Obama ran against Clinton.
(I've noted elsewhere I'm not a Hillary supporter and that I'd have liked more candidates in the race)
This is in direct violation of the DNC charter:
In the conduct and management of the affairs and procedures of the Democratic National Committee, particularly as they apply to the preparation and conduct of the Presidential nomination process, the Chairperson shall exercise impartiality and evenhandedness as between the Presidential candidates and campaigns. The Chairperson shall be responsible for ensuring that the national officers and staff of the Democratic National Committee maintain impartiality and evenhandedness during the Democratic Party Presidential nominating process.
This is far more interesting than Munich or Tim Kaine.