So I slogged through the thread and having never seen SWSE, I have to say I would be in favor of what was described.
Regarding some of the posited scenarios
1) The gruff dwarf with no diplomacy / persuasion. There are many ways to be persuasive. You can be diplomatic about it, you can be intimidating about it, you can be sneaky about it, you can lie about it. While I can certainly see the player of the gruff dwarf having an issue breaking out into flowery speech I really fail to see an issue with a glare and a growl (espescially when backed up with reputation) getting you as far as a lvl 1 diplomat.
2) The " I am scared of water" person. Well this one I can see the posters point on ... kinda except as it has been described there really isn't a "swimming" skill perse, rather athletics, running, climbing, jumping, etcetera. After 20 levels life would have taught you the basics of how to do those things. And thats what we're talking about basics. Sure you hate water... Work with your DM and ZOMG ROLE play it. I think I know the scary part behind that proposition but I'll get to that.
I usually play the skill monkey class (rogue, monk, ascetic rogue/ beguiling dancer) And EVERY session we've run into situations that could have been solved via stealth, diplomacy, subterfuge or Kick in the door and kill the witnesses. With one skill monkey and 3 "other" you can guess how often we choose to "be the bear" over "being the snake".
The scary part behind the "roleplay your weaknesses" scenario in my mind is it then changes from "daves character didn't have the skill points to swim and still be able to have high spot search or whatever, so we'll have to build a raft, a bridge or go around the lake" to "Dave is slowing us down because he is being a jerk and insisting that his character hates the water when we all know he can swim a little" . Luckily in my group option 2 is just as valid as option 1, but we would have some fun game time with the rest of the party trying to convince dave, maybe even some opposed rolls or will power saves to see how it played out.