Regarding to my previous post I thought it's somehow incomplete. Itls good to know what we want and what we don't want.
When I was writing about "render selected" I was thinking about something like this:
1 Select object or group of objects and hit render. It should render only selected objects but with all reflections. (mental ray has this option but it treats every object as "isolated" during rendereing, which means that rendered objects do not reflect things located around them)
mr_refl by
twoheadscom, on Flickr
2 The second option is lasso type region render (don't know if it's even possible, Ondra?) Sometimes we don't want all unneccessary spece which comes with typical region render. Let's say I want to re-sample just a table and nothing else. Using region render I get the table with legs but also a part of the floor which I don't want to render.
select_1 by
twoheadscom, on Flickr
what do you think about it?