Maybe consider just using Elixir / Phoenix? To the extent that there's any traction around web development with BEAM-based languages, it's around this stack and

Maybe consider just using Elixir / Phoenix? To the extent that there's any traction around web development with BEAM-based languages, it's around this stack and even then, market share is very small. Given what's perceived as less friendly syntax, I think you'd have a difficult time with a new Erlang-based web app framework.