What I believe for 3dgs to shine really is DJBMASTERS work and a FAR BETTER HOMEPAGE that actually demonstrates the usefullness of this engine with pretty demos such as Hummels recent work right in the front page.

I've seen this homepage since f00king 2001 I think, it's a digitally bought software. If the homepage fails so does the interests, sales and the manpower.

About Unity, C# shines over Lite-C / C++ of 3DGS anyday, I feel alot more productive. This is ofc my opinion only.

And Unity is alot more artist and designer friendly and importing assets alone is amazing.