Good idea for a thread.
I'm 2 years in and you have a better beard than me, Darrin (I think you started not too long after I did). Mine is thickening right up, but is still sparse and I have practically no sideburns. I can see it coming in still and I know that it usually takes about 5 years for a good beard to creep up your face, so I'm not in a rush - just thankful for the little that I have:
I've been using Biotin daily for about a couple of months and it seems to be helping with the growth thickening. I'm also starting to use a face scrub and massaging eucalyptus oil into my beard to see if it stimulates new growth.