“You mention a “Make Your Own Game” game. The EULA prohibits using UE4 to make a game/product that permits the creation of standalone products/games unless it is distributed only to UE4 licensees and not the general public.”
Ahh good point to clarify, no I am not enabling people to make standalone games by any means
What I mean by an in-game editor is the ability to make maps and customize the AI for my own game structure.
They would never be able to release a standalone product based on my game editor, and I am not releasing the source code 
So to clarify completely, I am writing an in-game editor to accompany my actual game and assets.
Basically, a fancy Level Editor for an existing game structure, and ability to code AI and do 3D scripting, all of which are entirely within my own game’s assets and code.
Thanks for bringing this up for clarification!
“If you make your own in-game editor, you can redistribute it to the general public (so long as it doesn’t permit the creation of standalone games) if it’s not based on Epic’s tools”
I’ve written the in-game editor from scratch using the HUD class, it doesnt even use slate
“I’ve edited your post because it included a large snippet of UE4 code. In a public forum, Epic permits discussion of small (up to 30 lines) snippets of code, but not more.”
ooooh Thanks! I forgot this forum was entirely public, I will watch that 30 line limit for the future
“Using FBX importer in your editor would mean your editor is based on Epic’s tools (anything from /Engine/Source/Editor directory), so it would only be permitted to distribute to other licensees.”
Thank youuu!
That’s the answer I was looking for!
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Rama