The bare minum an affli lock NEEDS in the destru tree is this..
http://wotlk.wowhead.com/?talent=IZZE00VM (ofc ruin will go in rather then deva as it's implemented)..
the issue is affliction tree it-self..
the IDEAL affli-tree for dps purpose need..
5 points in imp corru (that will raise corru coeff instead of dmg)
2 points imp agony (curse of choice)
2 points imp drain soul (aggro reduction)
2 points imp life tap (tapping is fun)
2 points soul siphon (filler+ life drain boost)
1 point amplify curse (needed)
1 point suppression (filler)
3 points emp corru (needed)
2 points grim reach (needed)
2 points nightfall (needed)
5 points shadow embrace (boost dmg)
1 point siphon life (needed)
5 points shadow mastery
5 points contagion
3 points eradication
1 point dark pact
1 point unstable affliction
3 points pandemic
5 points everlasting affliction
1 point haunt
3 points death's embrace
for a grand total of 55 points.. THAT is, leaving out malediction...
we COULD take out 1 point off from death's embrace and avoid renouncing anything else, but that's about it..
this takes us to this build..
that pretty much block any spare point for improved hs of sort (and lacks malediction AND 1 rank of death's embrace)..
while i think that a LOT of those talent are really good, they should make affli tree less heavy on rank 5 talents (we have quite a lot) :|