Sorry for coming to the party rather late (vacation and everything ). Here's my 2 rubles worth of feedback:
I guess at this point it would make sense to do Hadoop 2.0.5-alpha, right? Also, since we're targeting Hive 0.11 we should drop a standalone HCat support, correct?
My only other suggestion would be to target Flume 1.4.0 since it seems to be a pretty clean upgrade from Flume 1.3 and it brings quite a bit of goodness. Ditto for Hue 2.3.
Also, Giraph is actually 1.0 (no change from Bigtop 0.6.0)