to me a "tattoo collector" is one like me,
I consider myself a collector,
IMO a "tattoo collector" is one who collects several different styles from several different artists.small and large pieces.
I have some tattoos from very well known artists,and some from not so well known artists,
I have some amazing tattoos and I have some not so amazing tattoos LOL,but they are mine and I like all my tattoos.
most of my tattoos do not really "go together" or stay with a particular theme,
I have full arm sleeves,but they consist of many different pieces and styles,some pretty small some large,some very old some new,the same goes for my legs,
I have a mix of color tattoos and B&G,I have some fineline and some bold line pieces,
I get a idea of the next piece and artist by how I feel at that moment,although I do now have a plan since I am running out of room,
my collection started in the early 80's and has been done by artists from texas & california & Hawaii.I like traveling to get work done,I like getting convention tattoos also.
so that's my take on what a "tattoo collector" is.