Oh, I thought you said you rewrote unity in a week. It makes more sense now.
Yes, the JME SDK will always lag Unity because it has part of one person working on it instead of a paid team. That’s why we broke it off into a separate project… hoping that having its own release cycle, etc. would attract more developers. But it’s way easier to complain about it than to fix it so that’s where we stand there.
New users can create a project from a gradle template in a few minutes and get productive. Yes, it increases the minimum level of knowledge necessary to use JME but JME was always deceptive here. JME is a Java developers tool and you must know Java already to use it. From that standpoint, the SDK (in anything short of a Unity clone) will always be a disappointment to “new users” who don’t know Java. Point-click only gets you so far.
GSON is Googles JSON library and is used by gltf support in JME.
Anyway, I know they are looking for help on the SDK. You should join that team and contribute patches and stuff.