Development is slow but steady. I see no problem in that.
I do have some doubts about the pre-mine and the lack of openness about that by the dev team. I know they have this page where you can see what they spend, but not on what and there is also over 600BTC paid for shares that is completely off the radar.
When I see now that there are two more dev's (both friends and family) it sort of looks like they are spending a lot more on the same stuff (friends creating app's). Other projects do this as well (like Groestl), only in their own time, at their own costs and without any premine. Fact is projects like Groestl produce even higher quality and way more lines of code. This team surely does it's job right, but way more expensive and at a much lower pace. In my opinion Gulden will have way better chances if they start hiring some good PR in stead of more slow coders.
And then there is the issue of the ETF approval that is almost sure to go through this Saturday. I know officially it will be announced on Monday, but the default term actually ends this Saturday. Effectively it will be approved by default if it is not explicitly declined before the end of tomorrow. I'm sure a lot of people are going to speculate on ETF approval this weekend. This could easily boost BTC price above $ 2000. If that happens, Gulden will surely drop sub 750 SAT. So I for one am seriously thinking of temporarily selling out on this one for now and buy back at pre summer 2016 prices.
Just my two cents.
Development was slow to start with Gulden but it's not slow anymore, I don't know any coin that releases faster. It was first coin to do 0.13 code base update along with 9 other innovative features in one release. No coin is faster then the current development Gulden has going. I did have a look at GRS during the 51% attack scandal and all i see is copying everything bitcoin does, no innovation like Gulden has. I do agree GRS does copy bitcoin code faster then most other coins.