What might this soup be missing?

[Happytodayhappytomorrow]

I got some bags of mixed veg very cheaply this afternoon, steamed them, added some veg stock and made soup.
Somethings not quite right though. The veg mix was broccoli, carrots, sugar snap peas and sweet corn and I added some leftover peas and a few roasted peppers.
It’s edible but missing something.
The obvious onion and garlic maybe but I don’t really want to be getting the frying pan out this late.
Any other suggestions for a quick add please?

I find that starting soup off by sweating onions/garlic before adding other veg and stock gives the best flavour. I don't use a separate frying pan. I just start off with oil and onions in a large saucepan and often throw in a tin of chopped tomatoes too. I also find that some spice adds to the flavour. I find chicken stock seems to work better than vegetable stock, even when making a veggie soup (unless I'm cooking for a vegetarian of course).