I get it though, at least early on. The beginning of the game before you start to actually get to skylines in combat seems fairly sterile, and at least when I was playing through it (on hard) it made far more sense to pop in and out of cover while maybe laying out a trap or two. I didn't have the creativity I wanted, partially because of the absence of some of the systems that are just now opening up (I just finished
) and partially because of the way the health is designed. If I didn't also lose health when I lost my shields (due to it stacking or something) I would probably take more chances and have enjoyed it more, at least before it opens up.
That being said, skylines are just now popping up in combat. And it's awesome. I think even before the skylines started popping up in earnest, there was a missed chance to at least put some of those hooks up in the sky for players to escape to.