Hi,
1. When I add a source or a general note they are saved in ged file as @SXXXX@ and @NXXXX@ (for instance @S00001@ and @N00001@). I want to save my genealogy without them but I don't know wich tags I need to use in the box "Exclude the following Tags (or Paths)" for excluding them in the new ged.
No need to define specific path, just use the tab "Filter by Entities" and uncheck "Notes" and "Sources" entities
2. If we know the date of death of a person, it appears in tree view inside the rectangle of that person and that's enough; but if we do know that person is dead but not the date, there is no way of distinguish from living people unless you open Gedcom editor and check if "Known to have happened" chekbox is marked. I think it would be interesting a sort of mark in tree view for those situations. Customize in tree view, in the way you have indicated, makes a cross appear for both the living and the dead.
Just add a DEATH tag and you will see the icon displayed. ("1 DEATH Y" is the correct way in the GEDCOM norm to do it, no other tag after)
3. If two cousins are married they have to appear twice in tree view, each one in different branches. Lets suppose A and B are siblings and A1 B1 their childrem. If A1 and B1 get married A1 and B1 should appear both in branches of A and B if the parents of A and B are selected as root; but there is no visual evidence that this happens. Only if you are lucky and click on one of them it's possible to see them in the small representation of the whole tree as two tiny red boxes. I think it also would be interesting another kind of mark indicating those individual appear more than one time in tree.
This is difficult to do, the graphical view is basically done to display a tree, graph is complex to define and we don't have GEDCOM tag (private or standard) to note this kind of thing.
Now you can create your own tag and put a value you can display in your tree with customizing blueprint.
Zurga