Hmmmm, I'm a little bit sour on the HVT stuff - friend and I did a bit of grinding to get the required intel credits to do the top level weekly one, just to try. Spent my mates credits to activate it, went on in and found it almost impossible. The time limit felt too harsh, the sheer amount of enemies coming at you and the insane damage they seem to do (seems to be far more than usual), so we of course died......and of course the target zone is now closed off, so we had to spend my credits to reopen the same HVT, died again right at the end and now of course we have no credits to retry so would have to go back to grinding.
It just seemed overly harsh to not be able to try again once you've activated a HVT. I get a bit grumpy when I sink time into these types of games and come out with nothing.
DZ seems improved a bit though, generally better drops, although I did still get a lot of 163 rubbish. Got a new gear holster though, which was good.