Hi PacWhite, thanks for the post!
A possibility to add videos or jpegs as Background for the Mainmenu would be nice. Videos in the format like mp4 or webm (resources save)
Support for images as a Main Menu background (and for Credits) is on my plan of features to add, so that will definitely be an option. I've made a note to look into also supporting video formats.
Second is a way to change the textes in the Mainmenu to give it a personal note.
There is currently a method to achieve different text on the Main Menu, but it's a bit complicated at this point because you need to make use of the translation/localization features. For example, if your translations file contains an ID of "NEW_GAME" it will use whatever wording you have defined in place of the standard "New Game" text. I'll be creating some documentation around this in the near future (as well as some built-in functionality that will let you define these text values more easily).
Exporting the Game need to change the icon of the exported EXE. (i do it with resourceHacker - not the best way ;-)) (its only for beauty but necessary for release games.)
Agreed, this would definitely be nice to have and something I will be looking into a bit later on.
And. something that is importend for me (b'cause i like the feeling) is the walkingfeeling like in a RPG. Not so stiff like a Robot. WASD Control turning and moving in a RPG game like Gothic (was the first game that cames into my brain..)
I am not sure there is much I'll be able to do regarding the feeling of walking around, unfortunately. Due to the nature and intent of the engine (the maps and movement being grid-based), the player is required to walk along the pre-defined grid as opposed to freely walking around the map. However, to help some with the stiffness, you can disable "Limit Mouse Look" in your Game Configuration under the First-Person section. This will allow you to freely rotate the view around with the right-mouse button. Moving forward/backward and strafing will still move the player along the tile grid, but it gives a feeling of a bit more freedom.
Hopefully these answers were helpful and you are enjoying the tool so far! And no need to apologize about the English. :)