At the moment I'm running 2 piece bonus for 15% crit chance to backblack from pve gear 2 piece bonus for extra 3 seconds to xs freighter flyby from pvp gear

I found an easy way to get planet coms is simply to do an evening of PvP matches then trade the warzone coms into planet coms at the PvP items vendor

Having newly dinged 55 I much prefer the enclosed smaller zones like Black Hole and Section X. I much more enjoy these areas as they are self contained. Its easier to jump in and out casually, and theres little travelling time. However, existing zones also get overcrowded. I therefore suggest adding in more daily zones like these. Perhaps a section of Ord Mantell or Hutta that both factions can visit. In the alternative, why not add some high level daily areas to older planets, similar to how Belsavis has a bunch of similar dailies in the Northern section of the Tomb sub-map. That would encourage higher levels to go back to older areas.