I'm still using QGIS. It is a very powerful tool and I'm probably using only a few percents of what it can do.
And yes, using SMW gives me the same power it did on the BM wiki. Also, it can show maps inside the wiki, once I've figured out how to change the base map source that Leaflet is using, there doesn't seem to be a config option for that, I might have to fork it.
There's a page on the Wiki about the technology -
https://notveryprofessional.com/dragoneye/atlas/Dragon_Eye_Atlas:Tech - which I will be filling with more details over time.