They are certainly a keeper and I loved them when they first came out. IMO they were ground-breaking back then and still better than most now.
While I found what I consider 'better' rules that could be adapted for what I like, they are nevertheless great for a different take on how to do something if you constantly mess around with other rule sets.
Some supplements were better than others of course, but rarely did they contain something totally wrong (Portuguese grenade launchers excepted - although I expect that was something 'lost in translation').
Actually they got quite a bit wrong in some of their supplements. Portuguese and Bush Wars aside their published notions of how the Australian army was organised was rather amusing. Arse, elbow, elbow, arse. One got the impression that their source material was rarely ever anything but second or third hand sources. I suspect that the absence of material in English was a factor in not pursuing the mooted Central American wars supplement. that's not confined to them and to be fair they were always open to feedback on their, now defunct, forum.
That said it's a very good set of rules but with a reasonably steep learning curve. Allegedly, there are some hidden glitches with the maths in terms of combat resolution. Fire teams with odd numbers are advantaged against ones with even numbers.
Personally, I'm not fussed about on-line support or its absence. A good set of rules stands alone.