I'm a long time banshee pilot since halo 2, and I would like to address how frustrating it is to have a banshee destroyed, especially with the laser. Since banshees are one of the most game-changingly powerful items on the maps which have them, they tend to have very long respawn times. Since they're flying vehicles, they tend to be very quickly destroyed by AV weapons like the laser. This leads to extreme moments of frustration where you don't get a banshee until the end of the match and then blow up immediately.
I think that it would be nice if something were done to make that sudden removal of your vehicle into a more engaging gameplay experience. As it is, it is very jarring, especially since it can often be very difficult to tell that you are being targeted by a laser until after you've mysteriously exploded.
My suggestion is that a banshee should be shot down rather than blowing up in the sky. This would entail some kind of loss of control through damage that would cause your vehicle to crash. A skilled pilot would be able to steer themselves down for a soft enough landing to escape the wreckage intact. (Or to at least bail in a safer position.) This would be more satisfying for the pilot because they would be engaged in the experience of losing their banshee, rather than feeling like it was suddenly taken from them for no visible reason. Not only that, the person shooting down the banshee would get the satisfaction of seeing their target crash and burn.
I realize that it's far too late for a change like this to make it into this particular game, so it's a suggestion for the far future. Some other options that would also work:
1. The delayed explosion mechanic from the Reach beta. I was extremely disappointed when this mechanic was removed. Again, it engaged me in the experience of losing my vehicle. I was able to choose whether to bail, to fire off a couple more bombs, or to do a kamikaze dive into some enemies. I still don't understand why they reverted that change, was it that people couldn't adapt?
2. A higher prevalence of smart weaponry like missiles and rockets and a lower prevalence of the laser on maps with banshees. Rockets and missiles are about as effective as lasers are at taking out banshees, but evading them is far more fun and engaging.
3. A long range laser style EMP weapon! Make me crash into a wall!