What’s the next step (or half-step) after 10GBASE-T?

I run a small video editing business and plan to upgrade various equipment this year. We’ve been running 10GBASE-T (direct to a small QNAP NAS; no switch) for five years already and it’s been good; no major complaints. But I want to be forward-thinking and consider everything. So hypothetically, what are next steps after cat6a 10GBASE-T? Right now I’ve got a 10k budget for a new NAS and network improvements (if any). Thanks guys!