The specific issue I am trying to improve on is the procedure
after all the drainage and hose detachment has been completed at full height.
If you then lower the car+engine&trans to 36" off the ground(your dimension), you need to crawl underneath to remove the front engine mount and the 2 transmission mounts.Unless you are using a type of Engine +trans support bar above?
If the lift table has a double scissor mechanism ,it easily supports the engine and trans closer to full standing height.
I agree, if I already had a 48" lift cart, I would do exactly what you are doing. But if I am buying new. I prefer (perhaps naively)to get closer to the ideal of standing up straight rather than the lizard position.
If a lower ,inexpensive lift is O.K. ,either of the Harbor Freight alternatives would work well enough.You just have to crawl lower than your 48" lift table.
This one matches my car !
https://www.amazon.com/Double-Scissor-Hydraulic-Capacity-Height/dp/B00P5UOCZO/ref=sr_1_1?s=hi&ie=UTF8&qid=1491605788&sr=1-1&keywords=double+scissor+lift+cart