Once an user records a set of RPA Activities she/he needs the ability to debug the RPA workflows in Designer.
Current capabilities (in 2019.07) allow debugging just by creating workflows then an content pack then deploying content packs to Central and running the workflows from there.
Having a debugger for RPA Activities will increase authoring productivity significantly and will make Micro Focus RPA competitive.
RPA activity debbugger should run at least on recorder host.
Something more complicate but also more valuable will be to also add option to run debugger on robot host (equivalent to OO Studio local debugger and remote debugger); adds more complexity (verify robot is available, mark it as busy) but also helps catch small config differences between recorder and robot settings