Very constructive reply, I am sure you made him wiser for coming over our Q&A.
I will give it a go though:
There isnt a ratio which can be classified as standard SEO practise. All this is theory.
It makes sense that a company which run an active blog with loads of content, will NOT have an 100% homepage ratio cause that way you exclude your deep content from the link value and you wouldnt want to do that.
Assuming this is a ranking factor or a signal for identifying legit link profiles you would be looking for something natural such as 60-40 or so but that would depend on the domains that link to you.
For example I would expect web2.0 such as blogger and wordpress or article sites to link more often your articles than your home page while a donour page or a sponsored seminar page etc to link your main page than an article. I would expect the same in blog comments. Naked URLS of your articles.
See how many things come to acquisition?
Just to everything naturally and you will be ok. What I like to do is get high PR 5+ links for my articles and then pass link juice to my money pages via internal linking.
Thats not necessary an industry practise., Just what works for me and the niche I am into