Actually most people are wanting to look at the source to evaluate whether or not this is worth investing in.
There have been many scams in altcoins. So auditing code, is pretty essential, imo.
The fundamentals of distributed cryptocurrency, and trustless actors (including the original devs), is dependent on open source. Otherwise you are basically left with a centralized coin, where you need to trust the dev.
Ultimately, nothing wrong with that.. but it is what it is.
+1
I understand the concern with copying of code, but creating a successful coin is as much about marketing/network effect and credibility as it is technology. My advice to the dev, reveal a nice amount today, do what you need to do to establish credibility and keep an audience, and then after today stay ahead of the copy cats with a combination of hard work and your great vision. No need to browse the threads every day responding to everyone; don't feed the trolls and if a concern grows large enough I'm sure your community manager will bring it to your attention.
On a side note, getting other developers like battbot interested in your work is the first step to growing the team or at least jointly improving certain things. Open sourcing is also an opportunity to gain help and improvement - not having to do everything alone can be really awesome.