Basecamp is a great product for remote teams. It is a mindset. If you're looking for a standard project management tool with lots of features, ClickUp is a great choice. It's a bit slow (especially mobile), but in terms of features, it's unbeatable.

A good collaboration tool was always a big challene in the most team I've met. The main challenge is there are many tools with tons of features. They'r all great in the paper. But in practice, the team usually doesn't enjoy collaborating using them. This is the challenging part. The project management tools should be well designed to keep simplicity in combination with well-chosen features to bring the most productivity and activity among the team. I'm thinking about many of my stacks, ClickUp is one of the few choices which I've never thought about migrating about. I can't describe it in text, I just advise you to try it once and you'll understand. The team behind ClickUp is really active. They really care about delivering new features.

You are describing something close to issue tracker like redmine, jira+confluence, youtrack and etc. Redmine is absolutely free, for jira you should pay, youtrack has different licenses.

I have been using this for a while and recommended to my last 15 clients who were amazed by the flexibility of the platform. It has everything You need!