Hi there, 2crowns.
First of all, thanks for your feedback. Although i started developping the tool for fun and for my own use

i am glad to know that other people are being served and it is encouraging.
The feedback is also important to improve the tool. Kiaou and Ilham gave me great feedback that helped a lot.
As you noticed, the player appearances are still not available. You may notice there is a disabled checkbox in the user interface named "allow appearance" - and there is another disabled checkbox named "allow transfers". I am working right now on this two features for the next release.
I am glad to announce that it is almost done. The transfers looks fine. The appearance still needs adjustment in color properties (facial hair color, hair color, etc). Futhermore, the next version will be much faster to open the option file.
About the CSV editing tools, i understand Excel has a lot of bad issues when dealing with CSV. That is one of the reasons that I use LibreOffice, it works great.
I am sure there will be a lot of great tools around soon - if there is not yet, i have not been aware lately. Last year, for example, the PES Next-Gen Editor was great, but i did not try it this year.
But i like to tell people that the PESGambiarra is not suppose to replace other tools. Actually, it is supposed to complement other tools.
The PESGambiarra was designed to attend two scenarios:
1) To give you a fast start, then you would use another editor to fine adjust your option file.
2) To merge one or more option files.
Well, this is a long answer. I just wanted to take this opportunity to talk about the next version and to honor your feedback.
Thank you again, and i hope to post the next version ASAP
Just tested this and it´s working! I edited the Youth Players that appear in ML. I changed the Name, Nationality, Age, Height, Weight, playing positions, stats, appearance columns and reimported into PES. I started a new ML and in the Youth Team they all changed correctly! (I have PES Galaxy patches installed by the way).
BUT... Not the appearance of the players, not sure why, they remained unchanged.
Also, editing the CSV file is tricky, because I think Excel doesn´t save in "true" csv, even if you select CSV options in "save as..."(Tried MS Does version too, didn´t work). In the end I had to use another app called Ron´s CSV editor Pro, which saves the CSV properly and removes any bad Microsoft formatting. Then the CSV file imports correctly into your program.
This is still fanastic work my friend! I´ve yet to see such an in depth editor for PES, even Lagun´s Team Editor Manager isn´t as detailed as yours. Nice job!
I hope this was helpful to you, please continue to work on this, it´s an excellent app. Thanks!
2Crowns