The Sims Legacy Collection custom content tools

Hey, fellow simmers! I'm creating this discussion for a few reasons. First, I'd like to ask a question. Is The Sims Creator compatible with the Legacy Collection version? For example, I have a physical copy of the Complete Collection. Would it be possible to use that version of The Sims Creator (which is on one of the disks used to install the game) with the newly re-released version of The Sims? This also brings up another question. Are custom content creation tools (both those supplied by Electronic Arts/Maxis, and otherwise) from the original version still compatible? Also, is it planned for EA/Maxis to update these older tools for modern systems?

In addition, if anyone knows of any useful tools for creating custom content (particularly skins and skin meshes) for The Sims, I'll put them here as a collective list.