Well we can migrate to python 3 but this will be more investment in a stack that is more and more obsolete (Django) for SPA. Developers need also to learn the new best practices for python 3. At the end this will result in short term with python 3 code base written in python 2 style without the benefits of typing etc. Investment without benefits except keep our stack up-to-date.

Each solution for Python/Django add complexity: - async -> celery/rabbitmq - websocket -> Channels, Daphne, asgiref, channels_redis, redid.

It's quite huge to manage.