hey misterasset, sorry about no-one answering your questions. I wish I could be I honestly don't know the answer to either of you queries. I could only speculate...
Well caustics don't just suddenly pop up at sl 12-13, they are gradually built up like everything else, so you don't have to let each node reach sl 13 before merging the mxi's. The benefit will be there also for the caustics.
Where do I need to send the request or to whom should I request the extra license, I thought the extra lincese it automatic for all user before V1.0
Thanks for the info.