first taste is... not great. And thats without the mushroom soup. the tomato and beef stock arnt really complementing each other. will see how it tastes closer to the finish time. Worst case (and I stress, this is the worst case) i can just drain the sauce and serve it with the mushroom soup.
Sounds dumb, but try adding salt and a squirt or two of citric acid (lemon, lime, not another tomato). If it tastes like it's "missing something" it'll generally be because it needs either salt or citric acid. Not a lot of citric though, but yeah, like a half lemon/lime squeezed. Just a thought