Currently ive ranked 128, ive completed the Kronyn mission a while back and i have been toying around with what i should work on next for a mission.
I would like to get pointers on key missions that are important in the long run.
Im currently working on the Voliir Chain, but i think having a ship alli can wait.
I just need someone to point me in the right direction so i dont wast my time and energy on a mission when i could of had something more beneficial.

The zolazin chain will eventually unlock 2 NPC slots
The Aeon Moon mission chain gives you 3 planet fluxes and access to a mission that gives you temp fluxes.

Just 2 good ones off the top of my head

The zolazin chain starts with The Glaviz Incident right?

yes

Get about halfway through the drannik missions to get two extra npc slots

Trellith chain, and the tactical algorithm chain are nice to have

Eventually you will want to do the silthion chain to get the hybrid and the gemini cannons.
The titancore chain is nice with the titan proxys for scan boost.
The lazuli chain adds 2 npc slots.
The shadin chain has cloak mods and 2 npc slots but takes a ton of energy.
The first drannik mission has the gaia seeds other than that not much.
The taltherian chain has lots of good items and not to mention the taltherian race at the end.

Those are probably the most vital ones to complete.

The Temp Flux chain is a good one.

Thanks for the helpful tips guys.

Myralai chain - (not for the race but it gives you) 2 Kalvium Fortified Plating (size 20, hull 150, hull +5% bonus)

prejoran chain, the rewards you get form the chain stinks, but what you want to do it for is missions ended - gives you 13 missions for around 64K energy, and you need 86 missions ended to pick up the Krionite Transducer (size 0, +8 Energy Recharge, +30 Attack) and max out your energy regain


you can always check, http://galaxylegion.com/wiki/index.php/Mission_Chains to plane what mission chains you want to work on