Ausf,
I tried two methods for the track assembly, which I now call the "long" version and the "short" version because of the vastly different amounts of time it took to do them.
I always paint the track links on the sprues and to answer your first question, the tracks could be theoretically made workable but the parts are so tiny and the glue tolerances so tight, this is virtually impossible to achieve. I tried the long version in an attempt to make them workable and it didn't pay off.
Here are the two methods:
Long version: Assembled two links together with cap blocks with glue applied only to the cap block to allow the pins to hinge and remain workable. Did this for 43 links and 43 blocks. Assembled the sections of two links together to form one long track: Time: 2.5 hours. Result: Track was extremely stiff and difficult to manage placing on the running gear. Had to redo several links around the idler to get a good fit and virtually no workability. I removed the sprocket wheel completely and had to apply some considerable force to get the track to conform before placing wheel and track back on the vehicle. After about 3-4 hours, the tracks were completely stiff and set in place.
Short version: Adopted a three stage assembly process for this method. 1st step, assembled the links in groups of 3 by glueing them directly to each other in the pin holes. No cap blocks were applied. Did this for 42 links and kept 1 link back as the connector for the ends. 2nd step, combined two sections of 3 links into one section of 6 and applied the cap blocks. The assembled links kept a good bit of their flexibility as the process went much faster vs. the Long Method. 3rd step: Assembled 5 of the 6-link sections together and ran them around the sprocket and idler and upper road wheels for fit. Assembled the remaining 2 sections of 6-link for the bottom and connected with the single link and cap block to finish off the track.
Time: 45 minutes. Result: Track still very flexible and easily fitted around the running gear. No need to remove links or fight with flexibility around the idler or sprocket. After 3-4 hours, same result on workability as the long method.
As a further note, I removed all the pieces from the sprues and cleaned them up prior to starting either method, so the time involved was strictly for the assembly and fitting. The links were very clean using sprue cutters and I didn't have any problems with them fitting together. They are molded extremely well with the only drawback being they have 3 attachment points to the sprue for the links. The connection point is extremely thin though, so very easy to remove them as a nice tradeoff.
Phroosh,
When I first saw the size of the links, I knew this could be difficult if I wasn't careful. The kit comes with 92 links but only 86 are required and I, thankfully, didn't lose a single one to the carpet monster and still have all my spares!. After removing them from the sprues, I kept the links in one small glass bowl and the cap blocks in another small glass bowl and made sure the door was closed and the cats "contained" so as to minimize potential for disaster.
I also carefully cut the sprues first to release the tension as they are fairly tight on their small frame.
Drawde,
I haven't built the Tamiya, so can't offer you a comparison. The Dragon was very nice in terms of detail, 317 pieces and indy links, with only one minor problem regarding the front wheel spokes being too short and necessitating a base, and as Kenneth points out, it can be hidden very easily!
The finished Ketten is less than 4" in length, so some of the pieces are extremely small, but then the same would also be true of the Tamiya I would think.