Yes Janet this sounds a great idea. I am not sure where the ‘over concentrated’ (and also the ‘burn seedlings’) ideas come from, but worm compost was brilliant for me and this year my best sowing and potting compost has been pure cow manure! Especially with better germination because, I think, of its slight lumpiness which ensures good drainage.
Now I have a plant of cinnamon basil growing in pure manure which looks much healthier than one growing in multipurpose compost.