My first time in the Strike in the PC Beta, I was matched in right at the end. While I've played it before, I can only imagine how disheartening that would be to a player who is playing it for the first time. They're missing so much. Edit: To be clear, I mean just the first time. So, having some kind of permission in place so that players only can be matched in progress after finishing the Strike for their first time.
But what if say, 2 people are struggling in the strike and need a 3rd? - And up pops Newbie Guardian - I'd rather see the end boss mechanics, and try beat it, & maybe even picking up a nice reward at the end .....learn for a full run another time! Everyone has to start somewhere! - Why not, y'know - help the newbie Only last week, on PS4, Myself and a pal started a strike, (Shield Brothers heroic) for a quest ....only to get matchmaker with a random... But it turns out the random was already at the bosses, and had been abandoned by his former strike mates (both quit, too hard)... We joined, persevered, killed them... He was happy that somehow fate put us there, he got his progress....I got mine