I would like to see TestComplete releases in 64 bit mode. Since more and more applications are becoming 64bit and (Virtual, Cloud) Operating Systems as well. Also OS'es are moving toward 64-bit. And ...
Some time ago I occasionally met the article about why VisualStudio is not 64-bit. (And even the latest 2015 is still 32-bit one.)
I think that TestComplete is in the same boat and as long as it can control 64-bit applications I can hardly see what I will benefit if it becomes 64-bit...
Sample article for Visual Studio: https://blogs.msdn.microsoft.com/ricom/2009/06/10/visual-studio-why-is-there-no-64-bit-version-yet/
(Also: https://www.quora.com/Why-is-Visual-Studio-2015-still-a-32-bit-application, https://blogs.msdn.microsoft.com/ricom/2016/01/04/64-bit-visual-studio-the-pro-64-argument/)