Inclusivity Sign Proposal

Graham, NC-based Leos Creative proposes (and makes available for download and use) a universal inclusivity sign: "Based on mathematical symbols, the inclusion sign [+] was designed as a symbol for people to know that everyone is welcomed. Businesses can easily post this in their window and people of every walk of life will easily see that this is a space for them." Unfortunately, I feel this suffers from over-designing — the [+] gesture is more impactful in its most basic form.