I think the juries are needed but EBU has to change the voting system. Current voting system is just unfair.
I agree there's too much English in Eurovision and only bringing back the language rule can help. Only few countries show their language for example Portugal and they almost everytime fail to qualify. That's because, like we all know, singing in English is a big advantage.
This! The problem is equally shared between the EBU and the broadcasters themselves: if they stopped thinking what could work the best with juries and all started sending daring quality music in their own language, juries would have no choice but to cast their votes anyway. Just because most broadcasters play it safe, the rest runs the risk of failing simply for being "different" = the clearest proof of that is Portugal, the only country that never sold it soul so far. Of course, their entries aren't always great, but they stay true to what Portugal is I think.
As a European language lover, I'm just devastated to see the "variety" of languages decrease a little more every year: special mention to Israel that gave up its bilingual format and Serbia that will threw its language away for the first time. This is very poor, I'm sorry but I'm not satisfied with 6/7 countries out of 40 not falling for English.
As for the quality of the songs, I tend to think a year out of two is weak since to me the strongest years of the 10's were 2010, 2012 and 2014 (2009 was ok-ish, 2011 mediocre and 2013 awful overall), so even if I didn't listen to the songs yet, I hope 2016 will be better. As for the diversity, it's difficult to deny that juries were (partly or completely) responsible for the failure of songs with local flavor: Finland 2010, Bulgaria 2013, Portugal 2014, Poland 2014... and generally were not nice with non-English songs, one can find lots of examples: Bulgaria 2011 & 2012, Montenegro 2013 for instance. All this contributed to homogenizing the contest because they only seem to be ok with almost every ballad (going from "Suus" to "What If') and the usual safe uptempo stuff sent mostly by Nordic countries. IMO with the exception of radio-friendly "influences" a la Only Teardrops, I think songs like "Horehronie", "Quero Ser Tua" or "Samo Shampioni" are definitely chanceless. I'm glad the contest got serious (due to less joke entries) and somehow more modern-sounding recently, but I regret that Europe is scared of showcasing its culture now.