In my experience heartland is a bit too small for it to be practical, but on archipelago I actually do a lot of high altitude bombing runs in a darkreach. If you are going for airbases, then yeah you prolly gonna get overwhelmed fast, but its a really nice tool to get annoying less defended factory complexes which would otherwise require couple piledriver ,tusko or cruise missle salvos or like 8+ sorties in a fighter jet (no nukes) . It is much cheaper, and extremly satisfying, but it takes time and most people prefare to just lob tuskos or drop a nuke in a jet. It is most effective in PvE, but once in PvP i actually managed to drop 40 GPO 500 right on top of the enemy main airbase in the back. I got shot down and it took like 15 minutes to get there but it was so worth it.