Hielke, yeah that's the way it is now, but they could change priorities on match making for parties. They could do a priority search for other parties and if a party is ending against a group of individuals it could pull the party out of the 6 or 7 grouping and bring it back to another party if one was out there or something like that.
if they could alter things so parties of five are more likely to come up against other parties then it would take a lot of stress off the lone wolves.
A short priority search would be OK. Just let them search for other 5 man parties only in the first 15 seconds. After that make it more likely to meet other parties of 5 but also search for other people.