has anyone ever used bitgo?
I have and its pretty good 
I have been trying to build a similar service with some improvements but the going rates for anything bitcoin dev has been atrocious. No offense
. That said, couple of queries/suggestions:
1. BITGO has a paid service for "enterprise" level wallets. I have not tried it so I am not sure what kind of extra layered security is in place for that. If you are considering them for multi sig addresses.
2. Now most of the people already know you/your work with NXT. I first heard about you when I was reading up on the BTSX in wallet exchange where they have put in markets pegged (to use their lingo) to BTSX. Someone mentioned about Supernet and how it will have a market effectively trading every crypto joins to any other crypto. So the query is: how different/similar is this idea to the BTSX exchange market?
3. As I said, I am not overly familiar with your work but I do see the long list of project you are into. Thats one huge list man
Many of them have been open source basis, I presume? So I was wondering if you could list out the projects which you are currently working on/are in the pipeline? The reason is I really want to know how busy you really are? We normally have the best of intentions when taking on a project but things fall apart some times because of an issue encountered with another projects. I also think it will help in disclaimering your already fully disclaimered pdf
You can probably add "expect a bit of delay"/"don't bitch if the initial date is pushed" to your list.