Not really. UE4 (and thus UT4) abandoned UnrealScript entirely in favor of Blueprints and C++. The majority of code from the previous games (including base en

Not really. UE4 (and thus UT4) abandoned UnrealScript entirely in favor of Blueprints and C++. The majority of code from the previous games (including base engine code) is all UnrealScript. It would be more feasible to take UT4 source and add features of the old games. One of the main benefits of the older games is the mod community, but without UnrealScript it's not really doable in the new engine. Mods would have to be DLLs which are not really safe to distribute. It really needs Epic's support to either add back unrealscript or host a distribution hub where the game can download the DLL mods. I have a tiny glimmer of hope that the yet to be released versescript will allow a new UT with scripting support, but I'm not holding my breath.