I've finally got one, unfortunately. Small Probs

Hello V8 municipality,
now I finally have my first V8 Quattro, but with a few smaller problems. I'm sure they've only done hard work, but to avoid unnecessary work or gross mistakes, I'm asking your opinion on this.

The car:
4.2l / EZ 10/'92 / Model year 93 (according to VIN) / 350tkm

The problems / questions:
1. Unfortunately, very extreme oil loss. He throws out the oil somewhere at the back of the engine (at least the stall smells like burnt oil, which makes acquaintance with the cracker). At least in this area he will certainly not get any corrosion problems. It's all well oiled. My guess... Do the distributor seal rings or harden them? Or is there any other way in the back to throw oil? After a few hundred kilometers, a liter is gone.
2. When braking in almost step-mpo, the ABS ratters. Moreover, everything is tensed in narrow slow curves (diff lock?). If I just let him crawl, I can, but as soon as I just give a little gas, he's "rubbing." VAG-COM complains to the turning fence sensor G47 (ABS wheel sensor?) at the front left (no signal sporadically). I think that might be the reason for that, too?
3. The termostat seems to be open for a long time, at least the water temperature never exceeds about 60°, except for Stop&Go (and not necessarily 90°, rather so 75°). The oil temp also stands out sometimes just a pointer width from the left stop. The heating must always be set to 24 to 25° in order not to freeze. I tried to seal half the cooler with cardboard and it heated better and also the temp needle (water) moved something (estimate 75°). Oil temp, however, still at 60°.
Curiously, the climate display in service mode reports 90° water ?!?!?!?!!!
4. The climate pleases me with the 13.5 on channel 1. The feet stay cold, because there's no air coming down. This means I can't really use the automatic function, because it's probably trying to blow down at some point, but instead it just goes on the disk. However, you can save yourself from cold death manually via the medium nozzles. How to get the easiest to get to this stupid flap to make it go (or remove a foreign body). Do I have to disassemble half the car? Unfortunately, not all functions have been switched through several times by hand.
5. The cruise control is unfortunately not possible (it does not click in the passenger footroom). Any idea?
6. What about the comfort lock (window and roof to hold keys)? My Corrado did, but apparently the V8 didn't. Did they have the standard (so now broken) or was that optional?
7. Today I noticed that the funny window switches in the driver's door are bright red, even if I lock and lock the door from the outside. Is that normal? If not... What can that be?
8. Various lights in the dashboard and switch console are probably in the quietest place, but that's the least problem. It's just a hard job and doesn't bother me very much at the moment.
9. VAG-COM reports various Lambda errors and rule-crossings. As a result, the consumption is extremely high (good 3 to 4l more than in a comparison 4.2er). Could this also be related to the termostatic continuous cooling phase? Who's got experience?
10. Has any random hanger clutch with Plug&Play E-set lying around (rigid or removable - I don't care). Mainly for a narrow course?

So you have enough to read for now, respectively. to laugh at the newcomer ;-) and I am happy about numerous answers...
If I remember anything else, I'll post it.