Reg A+ doesn't provide enough for incentive for start-ups to turn away from private funding, and embrace the "mini IPO." Checkout Parts One and Two for even more information on the topic.
The registration, state review requirements (for Tier 1), and ongoing disclosure requirements (for Tier 2) will likely deter young companies from pursuing Reg A+ offerings. The costs, complexity and time commitment involved are significantly higher than tried and true options.