I have been on playstation for around 5 years now and as of recently I have started trophy hunting on the PS4, PS3 and the PS Vita.
I only hide games that have unobtainable trophies or games that I feel that I would never want to go back to.
I have put a lot of time in both playing and trophy hunting, this is the reason why I don't feel the need to create a second account.
I am planning to raise my completion rate on my profile but I will be mainly focused on achieveable platinums and 100% completion on games that are still obtainable.
I have many games from really easy to really difficult that I hope to achieve in the future both on my profile and in my backlog.