IMHO, the Carly's are best served in a box set. Why? Because honestly, other than the single hit from her first album and the two hits from her second album, there is not much demand for the remaining tunes on those two LPs. Carly did not really catch on big time until "No Secrets".
Single releases of "Carly Simon" and "Playing Possum" probably would be passed over by many Qaudio fans, thus creating titles that would not move a big number. Of course, "No Secrets" would be a winner, but then again, post-No Secrets, "Hotcakes" sold fairly well but "Playing Possum" was not big seller when it came out. Carly is on the same popularity block as someone like Carole King. They are both great songwriters and artists, but 75% of their fans know "No Secrets" and "Tapestry" and very little of their other work. There is great stuff on the non-popular albums, but they do not get the exposure that the main two do.
So, in order to get those titles out and insure they move, the box is the ideal solution to me. This way, the fans who buy the box can discover the unfamiliar material in it's quadraphonic glory and maybe appreciate the tracks they never listened to or skipped over when they bought the album back in the day, recorded the hit songs to cassette for the car, and parked the album in the stack
