I agree with you on this rant.
The first point is to me seems the most powerfull. A Thankyou can make or break a mod. As you said, no "Thanks" makes modelers unwilling to send over a model. Proper recognition means alot.
The second. I think a quote from another thread will sum this up possibly.
That negative attitude isn't supporting out modders and so on. It's just ugly. That quote implies that modders are eliteist prats. I happen to know that even basic stuff can be quite tricky. I tried once on The Sims 2 with several tutorials and so on and still failed miserably. Since TDU is a different format, that probally only complicates the matter. Cut them some slack.
Point 3. I've not much to add here as it's on more of a personal level.
Another trend i have noticed here that could be an attribute to giving up modding, are all the newer members here, just popping into the threads downloading the mod, say it doesn't work because they didn't read the readme, then in the same thread, request another mod. if i were a modder, that would de-motivate me if i kept seeing all these things.
The staff here do a bang up job with all the threads :).
Another thing relating to the last sentence. Most people expect mods to be done the instant a thread is up, or atleast replying in the thrwad asking when it's done. With the previous complications i mentioned, another thing that gets in the way is real life. These guys just can't pump out mods all the time, school, family and othr stuff is more of a priority to them that please some random poeple on an internet forum.
P.S: Thankyou to all the great modelers that allow their models to be converted by Tool for TDU.