Nope! As I stated earlier, rendering seperate parts is ok as long as its to get optical effects e.g. depth of field etc. From what you say it seems like you are wanting to stretch Bryce's capabilities in your own way! Well that should be perfectly ok. I guess what is most important is to play this with the spirit of stretching our own Brycian abilities and delving a bit further into the software. So if thats the spirit we play it by, I don't see there being any problems!