According to developers.
One role of linkshells and other forms of community is for situations like this so the players that are ahead can help support the players that are behind. I think the best thing players who feel it difficult to join parties can do is to play together with like-minded friends if you are trying to challenge content geared towards parties.
Who has done the above lately? One person stood out. That is kealoha. He spend majority of his time getting people get first 3 delve wins. AA clears even city void watch clears. Unfortunately for me since I'm 5/6 delve clears he did nothing for me. Haha just kidding. I thank you for the community of lakshimi for being very helpful. We need more people like you. N