There are time related drop issues which actually arise if (and we need to wait for the confirmation) the DL lives are not time limited though.
There's some math involved, but I promise, it's simple.
At the moment (DL live 1) there's currently 10 items in residence in the gold presents (If you're wondering it's the 4 accessories)
Now for catalog 1, you have a 1/10 chance of getting a specific item.
Still with me?
DL live 2 will add in 4 more accessories to the Gold drop list.
So the odds of getting as single item are now 1/14.
Okay, you ask, but wouldn't this mean that I have more chances of getting A DL live item?
Yes, until you remember one thing - You can get DOUBLES, and can do so forever. Capped an item to level 10? You'll STILL get doubles.
In short, constantly adding to the gold drop list actually makes it significantly HARDER to complete the costume collection, not easier, and this problem only compounds, increasing the difficulty by 50% each DL live.
So given how often Gold presents drop (Namely, for me, without pdrop interference I see one every 300 lives or 35 HOURS) you could be there... oh, from now to sometime before the heat death of the universe, because the odds go extensively long.