Add my vote FOR this also. There are periods where I am not using the Host computer but I do not want the lock screen to activate with non use. I use other remote programs and no matter how long I have a Host computer minimized, when I focus back on it, the Host screen is right where I left it.
I am new to Remote Utilities and am currently evaluating it for further use. So far I am very impressed. It just needs some minor tweaks.