Anna, some thoughts about that...
This time of year, tomatoes are juicy juicy. I think a lot of the roasting recipes are attempts to resurrect winter hot house tomatoes (which are definitely not juicy), and give them some flavor via carmelization.
But, that said, carmelizing the fresh tomatoes really brings out a lot of flavor.
I would suggest a rack, to lift the tomatoes, so that the juice can collect in the bottom of the pan, to which I add all sorts of herbs, garlic, onions, etc. underneath the rack. I collect those juices and stir them into soup, stock, sauces.
And then, you can get the desired carmelization on the tomatoes when they are lifted out of the unctuousness goodies they're exuding.