Well for a number of reasons:
1: he appears in the very first episode
2: he is the series first villain and our true introduction to the Saiyan mythos
3: his arrival on earth inevitably starts a chain reaction that decides the fate of all the characters in DBZ
4: long, flowing hair
5: he would be a candidate for a SDCC release in the future
Honestly I don't care if we get Nappa or OG Goku first, as long as Raditz is still in the running then I'm happy ^__^
1: he appears in the very first episode
2: he is the series first villain and our true introduction to the Saiyan mythos
3: his arrival on earth inevitably starts a chain reaction that decides the fate of all the characters in DBZ
4: long, flowing hair
5: he would be a candidate for a SDCC release in the future
Honestly I don't care if we get Nappa or OG Goku first, as long as Raditz is still in the running then I'm happy ^__^