1. You have only so many slots to use and recipe sets for those powers won't over all fit builds.
2. Your a Defender, your primary is your Buff/Debuff/Heal Sets. Your priority is for said powers to be stronger then your attacks. Should be very obvious, your a defender.
3. The attacks you have are best suited for Primary, with specific recipes & some soft control to help your primary ability.
4. I provide builds, that are best suited for survival of the character without a team & with a team. Though many of my builds lean towards team play and synergy with other folks of the team. I've already played the set in various aspects, I found that style of the build best suited the playing.
5. These builds are off my own experiences, thought patterns, me constantly paying attention not only me & but everyone on my teams action. How best to set stuff, and then work a build around that.