Makes sense for sure. However, until they release character builder / sheet. It’s mostly just pure speculation. I’d recommend you get in on the next dev update on Tuesday and get your question in early and get it answered directly from them.
I’ve already invested in the core books. However, if I can’t import my character into Foundry VTT or changes made on that character be fed back into Nexus, I’m not certain how much I will be using Nexus. For instance, when the GM gives me treasure in the VTT will it automatically update Nexus or at least offer an export feature at the end of the session?