Hi

I am afraid you are wrong Skindigo/indigo has Instancing and Proxies. This means that you can replace a 10K ploy tree by a simple 6face cube in your SKP file, and since it is instanced, it will be exported only once

As a registered user i can tell you Indigo + Skindigo is a very powerful tool
See this Thread from the indigo forum : I made a 3D with 2500 trees, no problem, and this with a good old laptop with only 2Go ram (yes, b the time, i was a poor student and i had no funds to buy a powerful computer ! )
http://www.indigorenderer.com/forum/viewtopic.php?f=3&t=7338

Janjake (Djegoo from indigo forum)