I think they would need to list the advantages over Go on their homepage.<p>They can assume that most people visiting that page are already familiar with Go. So simply having "compatible with Go" as a feature isn't really a feature for this audience, I mean Go is already compatible with Go.
Looking at the documentation gives a better view (<a href="https://github.com/goplus/gop/blob/main/doc/docs.md">https://github.com/goplus/gop/blob/main/doc/docs.md</a>). Interestingly, the fork/superset/alternatives to Go (Go+, Vlang, Odin) address some similar areas. In each case, however, their success is arguably going to be about how much momentum and contributors they can get behind them.<p>Go+ vs. Go (<a href="https://github.com/goplus/gop/blob/main/doc/goplus-vs-go.md">https://github.com/goplus/gop/blob/main/doc/goplus-vs-go.md</a>), highlights an interesting perspective of bringing in technical non-programmers, where some secondary aspect of their focus or job requires or is enhanced by programming. A language that's easier to learn and then use, is going to be more attractive to a wider audience.