Activate a loop manually

It would be great if one could activate a loop during playback. Just like you exit one using 'EXIT'.

Here is an example of a practical situation. Let's say I have got a bunch of loops stored in the memory. A track is playing and I am looking at the different loops that are stored in the memory to see (not listening) if I could use one to transition the track.. Suppose I see a nice 8-bar loop I like to use.. but it just happens to be already playing in the third bar or so (whilst the loop is not engaged). In this case I would like to turn the loop ON without playing this particular loop from the start. I want to engage / activate the loop so it will work once it reached the end of the loop. 

So instead of / alongside 'RELOOP' I would really like something like ACTIVATE LOOP (note this is very very different of 'ACTIVE LOOP'). 

PS

As far as I know this is very normal behaviour in Serato and I really came accustomed to it. And frankly I'm a bit surprised it's not featured in Rekordbox.. Or am I overlooking something??