I'm not sure if this solution will help you, but I have a batch file (in my case, elevate.cmd) that launches an elevated version of the current console. It won't stay tabbed within TakeCommand, but it does launch quickly and easily from the command prompt. User Account Control still needs to be accepted, but this is a quick [ALT]-[TAB] and [ALT]-[Y].
The command in my elevate.cmd is:
start /elevated "%_cmdspec"
My tcstart.cmd also contains some quick code to change the prompt if the console is elevated. This is a useful reminder of elevation and runs whether the console is started from the command prompt or through a right-click, Run as administrator.
The relevant line from tcstart.cmd is:
IF "%_ELEVATED" == "1" PROMPT $e[1;37;5;41m$e[K## ELEVATED as %_WINUSER ##$_$e[1;32m[$P]
You'll needs ANSI Colors enabled in your TCC settings for this command to work.
Hopefully this goes someway to help achieve what you're looking for.