Welcome to the Q&A Forum

I'm working on a website where all the blog content is listed as separate pages from the homepage, eg: www.domain.com/first-blog-post
www.domain.com/second-blog-post However, it would make my life easier if all blog content was listed under /blog/ so that I could analyse it better in Google Analytics. Eg I'd like it to be: www.domain.com/blog/first-blog-post
www.domain.com/blog/second-blog-post The developer is not keen because it would create extra work for him, and he's also said it's a bad idea from an SEO point of view. But is this the case? Presumably with 301s in place it wouldn't make a difference? Thanks for your help!