How is 1/10th not a big deal? Lol. There are larger portions, but they all matter significantly for a reason.
Here is how this application process was described to me by a major who has been doing these AFROTC rated appointments the past few years. CGPA is 10%, commander's ranking is 40%, etc., etc.
Lets compare bb2405's CGPA and the pilot selectee average, say a 3.2 (could be off by a few, but that is what the avg was a few years back). This CGPA is worth 10%. Putting that into scale, bb2405 would be earning 6.675 points possible of the 10 in the CGPA category. Now lets take a look at the average select. He/she would be earning 8 points of the possible 10 -- a difference of 1.325 points.
Lets look at a commander's ranking, worth 40%. bb2405 scores a 26.8 minimum points of the possible 40 being in the top 3rd of the class. Now lets say bb2405 is actually in the bottom 3rd of the class, or at that very point -- 33%. The total points of the 40 possible would now be 13.2 -- a difference of 13.6 points.
My advice to the OP would be that with only one semester left before applying, play this to your advantage. If a few harder classes can be pushed off, do it and take a few fluff classes to help compensate a few that have weakened your GPA previously.
My emphasis here isn't that GPA doesn't matter, it is that there are much more other things to focus on aside from a few bad classes that could funk with someone's GPA (i.e. commander's ranking).
I'm not here to get into a debate. I am trying to shed some light on a hopeful pilot selectee that despite having a few posters make sure to hit home that their GPA isn't the highest, I still don't think there is a reason to fret.