There is, in fact, more than enough room for an adjuster; moreover, it would be completely accessible, as you can see from the (blurry, sorry) pic below.
View attachment 7422
Incidentally, what looks like part of the cable end next to the crankcase boss, is actually a stack of three washers I cut and inserted to take up some of the cable slack while I am waiting for Motion Pro to make up my properly designed clutch cable.
As for the cable routing, of course, I can't speak to the situation with the Breva (that you no longer have); however, as you can plainly see from the pics below,
View attachment 7423
the L on the V7 (which I do have) is not only
not necessary as you suggest, but quite the opposite; it forces the cable sharply down over the headlight ear. A slightly longer cable (as I have specified) will make a nice easy sweep under the headlight, and across to the right side of the bike to continue the factory routing under the headstock over the regulator rectifier, between the V and on to its destination.
View attachment 7424
View attachment 7425
(Not that it is material here, but I have read on this list what some owners have done to reroute the clutch cable. The only thing I see is that people have tried to keep it off hot hot cylinders to avoid burning the outer cable insulation. Perhaps that is what you were thinking of?)
I am not one for speculation, so I will not blame bean counters or too much red wine for these engineering choices. Whatever the reasons, they are simply wrong. If you were actually working on a V7, as I am, I am sure you would agree.
Also note the (blurry again, sorry) picture of the threaded adjuster for the lifting rod.
View attachment 7426
The nut is not too inaccessible, but the threaded adjuster screw is smack up against the swing arm. Fortunately Guzzi machined a flat into the end of it, so with a suitable fabricated wrench-like tool, the screw can be turned when the nut is slackened.
The bad part for me, is that it seems like the screw has been turned in almost all the way, so there is little adjustment left to take up the slack left. This is ye another reason why not having a cable adjuster was a very bad idea from the standpoint of maintenance.
Finally, I must confess that serendipity has played a part in helping me cure my heavy clutch. While I was tinkering with the clutch arm, the arm return spring fell out. I tried to squeeze it...and failed! The thing is stiff as a valve spring. Well, not really It is about an inch long and takes 20 lbs of force to compress it to half that length, and another 10 lbs till the coils bind.
I reassembled the clutch system--omitting the return spring and now with some of the slack taken out at the bottom en end my jerry rigged spacer, and routed the cable as rationally as possible. the clutch pull is now reasonable, though quite heavier than that of my Daytona 675, still significantly lighter than the old Bonnie.
I can now adjust the free play so the clutch engagement and disengagement takes place closer to midway of the clutch lever operating arc. A test run shows no slippage.
So last step, besides the new custom cable will be to install a lighter return spring.
However, I probably won't post about it here again, as there seems to be little interest in my experiments, and what replies I have gotten seem more slanted to make the responder look wise and make me look stupid.
Ciao.