this isn't about BTCD but since James is active on this thread I wanted to first say congrats on the poloniex deal! I am just wondering how that asset works, I purchased some but wondering if I need to do something with it now, like transfer to NXT asset exchange or something. Any help is appreciated, sorry if it is a noob question.
Thanks!
The idea with JLH is that it is very diversified so this reduces risk. It is also "professionally" (not sure if I deserve that term in the investment management field) managed so you dont have to worry about underperforming assets held by JLH. All the internal earnings will be reinvested to compound growth and also to prune out the laggards.
One thing that most people probably wont expect is that I will continue to add more assets to JLH, this weekend I am planning on two additions, though adding two in a week will not be a regular thing. In two months I added 20 assets, and since I am involved in a lot of startups I can usually manage to set aside 10% to put into JLH. For expensive things like sianote, I was only able to get 4%, but now thats 4% of a company that just got almost half a million USD VC investment. sianote is just one of 20 current assets in JLH.
In fact, this does relate to this thread as InstantDEX, Privatebet, NXTcoinsco, NXTforex and other assets that will be part of the tech bundle I am making for BTCD are all in JLH. So as BTCD grows, it will help InstantDEX, et all grow, which will help JLH grow. Also, as InstantDEX grows from its NXT community side, that will spill over into BTCD.
Basically everybody wins, at least as long as you are part of the JLH universe

James
P.S. So to answer your actual question, you can keep the JLH on poloniex or withdraw to your NXT acct. But make sure you make a really high entropy password! Something like:
openssl rand -base64 66
will give you a nice high entropy password so your JLH will stay safe