As it stands now, extensions have a fairly detailed explanation of the use/bonus they provide.

As we learn the game, and speak to the devs/others (thanks for being there devs) we learn that there are a lot of minute differences in how one reads the explanation and how it actually applies to the game.

For instance, armor extensions have diminishing returns or extensions that do not "specifically" state "percentage point" do not actually add +x% +x% per lvl but actually must be calculated by doing a base * 1.xx * 1.xx formula.

While i understand that keeping some things "hidden, or unknown" might be normal or might benefit the "as u learn you figure things out". I feel that in the current setting where EP can NOT be refunded it might be a good idea to be more clear about what an extension actually does.

(this i guess COULD be done by an outside community website, as it so often is in most MMORPGs) I dont see why it could not be done IG.

The ideas I tossed back and forth with a dev where like this:

Idea 1:
Implement within the extension description the real formula it gets applied with and or diminishing returns. With maybe under the "info of said extension" it's current applied value based on how many lvls you purchased in that extension.

Idea 2:
Improve the current highlight feature within modules (as you check a module/bot that is equipped you will see a highlighted value when a modifier is in place - blue color)  with a tooltip which details not only the value (as it does now) but what extension and/or module is modifying the base value and by how much.

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This will bring about a much cleaner understanding of where to spend your points, what they are actually doing and how to improve about it and calculate where you want to go. I feel it would not make things "too" easy, just bring about a better cleaner understanding of the game as you progress through your extensions.