No it's not too bad although Pixiv is kinda shit for finding new artwork since only the creator can tag their work and some cannot be bothered to tag it properly. Bremerton and I think Unzen artwork is the hardest due to nonsense tags.
Also trying to find art of less popular characters (and there's a lot of characters) is hard, I don't want to be posting Atago, Illustrious and Belfast all the time, there needs to be variety.