How to conceptualize rehab design for max impact, a few photos

[Brian Williams]

Looking at this kitchen (Rehab/Flip deal), I know how to price out work and deal with subs but how are people coming up with how to redesign the layout? I know there's CAD programs and so forth but on smaller projects ($50-$60k in rehab) are REI people hiring interior designers? What would you do with this kitchen? 50s house needs updating to sell and compete with the nearby comps.