OK, since you have given me an invitation, let's go:
You have looked at all the links and seen that they are often circular, by which I suppose you mean that there is not one single neatly set out, pre-planned holiday to suit you and your however many it is mates (how many by the way and what are they doing to help?) which has stimied you. So, the obvious thing is to join some up. How? Well just about any way you like to give you your four to five days in Germany / the Black Forest.
Now comes the tricky bit. What do you want to do? Go north to south and up again? Go north to the middle over one day, then use the middle as a base and ride out from the base for two days, once in one direction, the next in another and then ride up again? Or do you just want to be given the best four or five days' worth of roads to do it on, in a neat file that will be MotoGoLoco friendly so that you and your mates can download it and ride off, sure in your minds that there is nothing better?
What you have seen is that MotoGoLoco and all the other similar software (up to and including Garmin's offererings) is pretty dumb stuff. Yes, it will display a route and it's certainly great at displaying the RiDE routes, which I quite like. But then it just sits there (just like all the other suggested routes do) awaiting some other input *. The routes - and there might be many multiples of them - will not join themselves up into tidy four or five day jaunts all on their own; they need additional input. What that input is will vary from person to person. Don't want to give the input? Fine; ask others to do it but give them some sort of clue as to what you want to achieve, please. You can ride the length of the B500 in a day or take two or three days doing it. You can spend four days in the Black Forest and not touch it other than in passing. It really is that broad.
There is a whole load of ADAC inspired routes here on UKGSer, along with a fresh link on how to get the free map downloads. ADAC have gone to some trouble creating the maps and routes but they then demand some input from their end user. Great, unless the end user just wants to sit back and be told what to do, exactly what 'great' roads to ride, how long it (might) take and just about everything else.
http://www.ukgser.com/forums/showth...to-iBook?p=4520476&highlight=ADAC#post4520476 See post 23 onwards
Here's ADAC's map of the Black Forest:
As you can see, it has (not surprisingly perhaps) the iconic B500 but also some parallel roads, all near enough in a north to south direction. It also has the suggested roads running west to east and / or in any combination bods might like to use them in. Look at the map, turn on MotoGoLoco and create a route that suits you. It really is that easy.
It might not be very clear as it's a snap shot of the original PDF, all done on an iPad. The original is fine:
https://www.adac.de/_mmm/pdf/TK_09_Elsass_Schwarzwald_SchwäbAlb_final_226424.pdf
Here's Biker Betten's PDF of the same area, with even more suggestions:
Again, it's a snap shot, so the original is much clearer:
http://wp.bikerbetten.de/wp-content/uploads/2014/07/Karte-Schwarzwald.pdf As you will see, the Biker Betten routes are often circular but can be ridden A to B to C to D in what could be straight lines, which is maybe what you want? How you cut the suggestions into MotoGoLoco is again, up to you and your travelling companions. That's the input the software requires, it won't do it on its own. The great thing is that there really is no right, wrong or best way to do it or to plan your holiday. Just do it for yourself and see how it goes.
Fancy some other routes and / or want some ready made ones, look here:
http://www.ukgser.com/forums/showth...ack-Forest-Alsace-and-Vosges-and-some-extra-s
Again, you'll have to mix and match. But hey, it's half the fun. Do it in those dull hours over to New Zealand.
* Garmin and I think TomTom have responded to this bikers' need by building windy roads algorithms into their software, producing (depending on other settings and variables) what it perceives to be ready made routes down 'great' roads. BaseCamp will also provide estimated times and / or will all but build tours of three, four and five days, all from within the software that came free with the device. Give it a go. It's free, you can't break it and, not least, they can't touch you for it.