[ktran03]

Xcode 6.1.1 fixed most of the problems you mentioned in the first paragraph for me. Sourcekit crashes was the biggest annoyance, ughh.

[archagon]

I'm on latest and the indexing issue is just getting worse and worse for me.

[almassapargali]

Try removing (backing up) all folders from ~/Library/Developer/Xcode/iOS\ DeviceSupport. It helped for me.