I think 'technical' is put to the test if you have a track that is something like that of Fern Bay where you have very small straights, a tight track, bumps, rises, etc....
Personally I think the only technical tracks in LFS are Fern Bay and South City. I believe it was Fetzo that explained he still prefers the S1 tracks over the newer S2 tracks, and I agree with that... because I prefer technical tracks more than anything. Just because you drive on the limit (at the oval?) doesn't mean it is necessarily technical. I think what most of us are looking for is a track that is very enjoyable with regard to how active you are in the car while driving. And quite frankly, all the S2 tracks (KY, AS, WE) have NOT given me the best impression of a technical track. They are very wide/broad tracks, smooth, and have very little tight sections or fun chicane complexes. They are just one corner after the other, with a sense of 'break time' in between... leaving no rapid connection of technical driving at all (ok, there can be some exceptions with straightaways being a common piece of a track, however, it is too common and relaxed even when you try for a world record. There is just too much time to setup for corners on the S2 tracks (IMO, the S2 tracks are intended for the BF1, but they still need more slow sections)).
No wonder why so many people want a Nordschleife type track, or apline backroads course... it is because those tracks deliver the most excitement for a lot of drivers. It's obvious if you have a beatiful sports car and you see a nice open twisty country road... your reaction will be to enjoy that drive because it feels so untouched and you can thrash the car around however you feel like it. Now with respect to racing, a technical track would be very intense against other opponents, but that is not to say passing would be impossible, it would probably be very fun to maintain the limit on a track like I've described. So, the S2 tracks we have hardly give me any enjoyment in the racing, and there could really still be some improvements made to them in my opinion.
I feel that a technical track also involves very technical braking, cornering, and overall a very active and CONSTANT on the limit drive.
If I could, I would've voted for Longer Tracks also, but it was only a single choice. I don't care of the track is long or short, I just really would like it to have some very good sequence of corners and complexes that make it very technical. Even if we had a tarmac version of Fern Bay RallyX Green... I would deem that a very good technical track simply because it starts with a very tight entry into the very tight esses which have high bumpy curbs, leading to quite a bit of bumpy surfacing and a hop/jump which leads to an immediate right hand turn. In a sense that track already poses a significant technical challenge in only 30 some-odd seconds. If we had a track with a bunch more sections like that, I would be in heaven.