The longer it was rented out can’t hurt either since it’s supposed to be an exchange of one investment property for another investment property  Your probably going to need a 1031 expert like @Dave Foster or a CPA to weigh in if you don’t have one. 

How have you done with expenses, quality of tenants, turnover, cash flow, their property management team, customer service, etc.  

One way might be to talk to some of your past customers, and ask them what features attracted them to the house, and what features they found neutral, and what features they wished were different.

.—(1) The commission may deny an application for licensure, registration, or permit, or renewal thereof; may place a licensee, registrant, or permittee on probation; may suspend a license, registration, or permit for a period not exceeding 10 years; may revoke a license, registration, or permit; may impose an administrative fine not to exceed $5,000 for each count or separate offense; and may issue a reprimand, and any or all of the foregoing, if it finds that the licensee, registrant, permittee, or applicant:(h) Has shared a commission with, or paid a fee or other compensation to, a person not properly licensed as a broker, broker associate, or sales associate under the laws of this state, for the referral of real estate business, clients, prospects, or customers, or for any one or more of the services set forth in s. 475.01(1)(a).

I am still running the show for FlipperForce and will continue to be heavily involved in working on the product vision.By joining Fund That Flip which is a leading nationwide lender for real estate deals we will have more resources to invest in our software platform and improve our product and services for our customers. 

An expert like @Dave Foster could tell you if there’s anyway to pull it off if you have the extra 50% in cash laying around.

I'll continue to make sure we work with our agents on higher education and customer service.  

(This is just an example, and not concrete.)We'd send them more customers and hopefully they would also be able to edit our videos for us too. 

My company long and foster offer great referral program.

Custom Analysis: Regardless of the rule you use, always perform a custom analysis for each property.