2. Would raising the forks...help with the above brake line question?
No. The end points of the master brake line hose are the master cylinder and the manifold below the tank, with an intermediate clip at the bottom right of the steering head. The reference point for all these locations is the frame (for master cylinder via the handlebars), so, raising the fork tubes does not affect the length required for the master brake hose.
From the variety of experiences reported with regard to whether brake line extensions were needed or not when the bars were raised, it seems there are a few possibilities one may encounter;
1) No extension required or other change.
2) No extension required with minor re-routing by releasing the brake hose from the intermediate support clip at the bottom right of the steering head (I think some may have added a replacement intermediate support; e.g. a cable tie).
3) Those who have required a longer brake hose may have needed to do so because:
a) They did not do any re-routing; e.g. releasing the hose from the intermediate support clip.
b) Variations in the OEM hose length required some to need an extension while others did not.
All of the above affected, of course, by the degree of relocation of the master cylinder, which is a combination of lift and, if applicable, back, and, again if applicable, whether you're using the original bars or not. Wider bars will inherently be more likely to require a hose extension while narrower bars will permit increased relocation of the bars without a hose extension.
One question I'd like answered is whether only the master hose can be changed or if the entire front set of hoses and manifold need to be changed. When I first bought my '12 DL650 I contacted one of the well known suppliers of such items and was told the latter; i.e. the entire set with manifold needed to be changed. Made it expensive and seemed to require tank removal for access to the connections between the manifold and the ABS control. Indeed, as best as I could see the hoses at the manifold from underneath, it does appear as if the hoses are connected to the manifold with permanent, swaged connectors.
So, is this correct or is there a way to disconnect the master hose from the manifold so you can replace only this hose? Do you need to remove the tank to do this or is it possible to do it from underneath?