your best bet, to be honest, is to make your own fireteam of like-minded individuals. I understand your thought process. I do it occasionally as well...the only place that I don't do this is devil's lair...i will ride my sparrow past that entry area. Every other area, I will kill enemies on my way. Hell, alot of the time during strikes, I'll walk. I find it that if you have headsets, you can actually hear the sounds of chests/collectible materials, and speeders mask those sounds. With that being said, I try not to do strikes unless I have a full fireteam. In the odd event that I do matchmake strikes, then I'll take a look at the rest of my fireteam. If they look like they want to take their time, I'll go with them. If not...then meh.