If you answer why you haven't visited in 2 years then that will probably be the answer you seek.
Not sure what you mean by "cool" discussions. If you mean things like LVOOP then, personally, I don't think it has anything to do with LavaG being past it. LabVIEW stagnated over 5 years ago and all the subjects have been talked to death and everyone has written and debugged their frameworks (as they were in other languages 10 years before that). There were really only a handful of contributors (AQ, Daklu, Shoneill .... and now I'm struggling) and the only one that still visits to contribute is Shoneill, I think.
Generally, though the lack of LabVIEW innovation is the main reason there are less "cool" discussions generally. The thing that made this apparent to me was when a 15 year old technology (Vi Macros) was suddenly re-discovered and piqued everyones interest. There was then a flurry of contribution and excitement (especially me) that brought me out of answering implementation questions and sparked my need to investigate and explore - something that probably hadn't happened for a couple of years on LavaG. So new "cool stuff" isn't being discussed because LabVIEW isn't developing new "cool stuff". VI macros ended with the development of "Named Events" and that is "Cool" with a capital "ICE"
If Lavag.org goes then I will not be going over to ni.com. I never post on ni.com and probably only visit it 2-3 times a year if Google gives me a result in the top 5.I got tired of it demanding to know the inside circumference of my colon just to log in and the quality of answers is nowhere near as adroit or concise as on here.
You know how after 10 years of programming when you have a problem that would be a 10 minute fix if only you knew x, y or z? So you phone up NI and manage to get through to an application engineer then spend the next 4 hours explaining your problem and them passing it on to someone that actually knows, waiting for their response then replying back. Three days later of this back and forth and they finally escalate your query and you get to talk with the actual person that knows and they tell you "Oh thats what you wanted? x=2, y=4 and z=8". Thats ni.com! In this analogy, LavaG is where ni.com escalates the query to. So don't think of ni.com it as a competitor. Think of it as a filter for studenty and mundane questions