Found this project which can do some pretty cool things with UE4: https://github.com/UE4SS-RE/RE-UE4SS
One of the main things included is a script to re-enable UE4 dev console, could be a good alternative to the paid UUU mod, as a bonus it can also run on game launch via DLL wrapping, instead of needing you to switch out of the game after launching.
Unfortunately it doesn't seem as universal as UUU right now though, some games work out of the box, but then there's odd ones (usually with Denuvo or other engine changes) that need custom config files for it to work.
Luckily some custom configs are already included, and seems development is still pretty active on it so hopefully more will appear soon, probably worth keeping an eye on & maybe updating article with it eventually.