I decide to start a CSB (Commander Skill Builder) thread as we don't have one yet and a new version has just been published.
Link: http://csb-hype.5v.pl/
I took one of @Spyshadow01's recommended Juan Carlos Miramon builds for preview purposes
For those who are new to CSB, it's basically a tool that allows you to test different skill builds for tank commanders before you apply them in the actual game. For skills that stack, they also show the resulting stacked numbers instead of displaying them individually (like it is in the game at the moment).
You can also share builds by copying and pasting the URL, or by copying and pasting the strings in text and apply them in the builder.
For example, the URL for the build above can be found here: http://csb-hype.5v.pl/?miramon=A1A7B1B7C1C2C3C4C5C6C7D7E7F7G7
Alternatively you can go to save/load and paste "miramon=A1A7B1B7C1C2C3C4C5C6C7D7E7F7G7" in the second text box to directly apply the build.
The latest version 1.60 finally displays builds with multiple starting skills correctly (credits to T3nam for that). Kwon Han is also in the build now and other commander changes that were added in the 0.31 Spirithaven season should all be in there. Localisation for new skills will have to come later as T3nam will need time to separate the language files for each translator.
If there are any problems, please feel free to contact HYPE on their discord server or mention them here; I can forward any issues to them as well.
The recommended builds list has been removed from the site, but a thread for various suggested builds is available on this forum.