How much ABAP740 (read: functional ABAP programming) is too much?

Hello SDNers,

Now that i am finally developing productiv programs in ABAP740, i am often faced with the following dilemma -

How much ABAP740 (read: functional ABAP programming) is too much?

When i saw @Christian Guenter program Z_REDUCE_FOR_FUN in the blog discussion ABAP News for 7.40, SP08 - FOR Expressions , the same thought came to my mind.��

When i see the demo programs from @Horst Keller, i am inclined to use as much expressions as possible. Although i add inline comments explaining what the hell is going on, but still sometimes it seems a lil' too much ��

This construct is definitely not going to make me new friends.

Where do you draw the line? Do you have any techniques to make the expression-based ABAP programming more easier to understand?

BR,

Suhas