This page links to the official To-Dos for RcppSMC. The linked pages also describe various ways of extending the work which has been done in this project in the future.
https://github.com/rcppsmc/rcppsmc/blob/master/TODO
https://github.com/rcppsmc/rcppsmc/discussions/57
https://github.com/rcppsmc/rcppsmc/issues/25