What would be really cool is if the flight computer could trigger events based on altitude. Problem is that doesn't account for how the atmosphere will decelerate the craft, so it's a bit of guess work (so many probes smashed into Duna). My method is to create a maneuver node and drag the retrograde marker so the projected trajectory puts an Ap marker at the node, then I can slide the node back and forth and get an idea of how long to X altitude and then create the flight computer event based on that. But working out the time intervals for when to have those events happen can be a bit tricky. One thing I enjoy doing (although it often goes wrong) is using it to sequence atmospheric reentry in the blind perform burn, deploy drogue chute, drop shield, open main chute and deploy legs.and then wait a little while before re-opening antenna and reconnecting. I quite often use it on manned craft to execute a maneuver node, cos I know I'm bound to get distracted by something on the forum while waiting to timewarp to the node! One of my fav things is the flight computer (even if it doesn't always complete a maneuver node quite as expected).
Been using it since the dawn of time, (or at least since it was the only way to have unmanned craft) and it's grown and changed and continues to be one of my favourite must-have mods.
I just want to say how much I love this mod.