Yes it is easier to get up on it, inspect and tune it.
But, the car will drive like complete poop though. You will notice the car comes out , is harder to go straight and a long list of other things.
Positives. Good airflow and easy access.
Negatives , scrape your heatsink , bend it , scrap up all your shock towers or any other part that tall on the car, hard hits , scrape the side more , direct impacts with chassis parts without some sort of deflection.
With the body on your protecting the car , looking better , handling 100% better and thats what they are meant for.
It will run slightly hotter so you just easily set it slightly more rich with the body off and check and make sure the temps are good afterwards and power and smoke production are the same.
Solution. Cut holes in the body to allow glow-starter access. Cut a hole to get you access to your carb needles. After that you will never really go back.
But I know how you feel. Iam the same in a way. But think of it this way. Your just fooling yourself, sooner or later it comes down to the car needing the body on it. Just get the body on and go for it. Dont worry about adjusting the needle after every throttle blast. lol.