I can see the error and was hoping for some clarity. The Noble can be so much more although names are just names in the game so any of them are confining to the underinformed.
You may also look at the Scout as a weak Soldier with more skills and in some ways you are right. You can also look at it as a highly skilled field operative or even a spec ops as with those additional skills but, at least when compared to a Soldier, an improved skill list. If you think the Noble is good you can look at the Scout in a similar light except it gives up one trained skill for a lot hitpoints, more weapons, better REF, and basically access to all the skills that the Noble does NOT get access to. In all hone
A character (ab)using UtF early makes it strong and Jedi is the class that can do that the fastest because it give Force Sensitivity as a starting feat. This enables the character to take Force Training at 1st-level instead of 3rd which is often the earliest for other Force User builds but there are some species that allow FS and FT at 1st-level through other classes. By mid-levels (6-9) the starting advantage of Jedi in the UtF department is far less noticeable. Scout is a class I almost never would multiclass into because of its Skills and middle of the line hp; I'll take the hit to hp from a Soldier/Jedi for the additional skills to start Scout. If I multiclass into Noble it is usually from a higher hp class and I am doing it for talent access and not the host of trained skills; starting with 6 trained skills doesn't mean a thing when you enter Noble later.
Scoundrel is definitely the tricky to place class. It has GREAT skill access (it's missing Treat Injury, Survival, and Endurance) so I may start in it if I want to train skills and more than two are not on another class's list. Otherwise I believe it is a very good class to multiclass into. Most characters can use PBS although the talent select is probably what you are after; it also makes all of those skills into class skills to learn them after 1st-level. Many of my "tech" guys actually start in Soldier for the hp/proficiencies and give up one trained skill; when it is time to expand skills Scoundrel is a pretty good choice.