Great! I didn't upgrade to 0.10.0, but after no serious problems reported with 0.10.0 and these fixes I now feel the urge to do it. 
I don't think so. Why should you? What I understand is that blockchain issues should only be expected when downgrading.
Is it recommended to delete your blockchain and download a fresh one even if it works just ok with your current one? It would be pretty annoying since it's very slow to download the whole thing, but even then, im pretty paranoid and i want a correctly working blockchain.
I don't think so. Why should you? What I understand is that blockchain issues should only be expected when downgrading.