If the firearm is not working correctly send it back. I agree, if you have multiple issues with it and lose confidence in it, you will likely always have that in the back of your mind, no matter how well it works after repair. Had that with a Smith revolver that had issues, and a Taurus revolver that had MULTIPLE issues - it worked just fine after the last trip to the factory, but I got rid of it anyway.
I think that there IS something in the works for the P-10 series, but I don't know what, I don't know. All I know is mine works fine, and many others work fine, and that some do not. Send it back or sell it, either or, but I don't really think the ramped slide cover is going to be the only fix.