I'm the dev of GroestlCoin and I thought I need to share some of my thoughts on this.
(I apologise in advance for a lengthy and non-structured email, it's getting quite late here in New Zealand)
Thank you so much for the update.
I think one of the most important thing to help people keep faith in a coin is an active and available Dev, so just having a place to converse is a huge thing.
A few small suggestions from me would be laying out the basic roadmap of any changes (you basically just did that), but in an 'official' place like the website, and make sure it gets kept up.
Being fairly new, I have posted this elsewhere, but was never a coin specific statement, but I think one of the biggest hurdles is making sure you always have easily accessible info for the new person who is looking to buy or mine the coin. Never forget the little guy, because new people and a growing community are very important as well as a good technical base.
So the more 'easy to read' explanations of some of the technical decisions or thoughts, as well as some basic marketing (logo, colors, rewards/bounty on projects and goals).
In this case for Groestl (A hash dish?) I have been mining this coin quite a bit and feel it has some future, but it needs some love at this point for sure.
Looking forward to the next few weeks!