Recommendations for a 2000 point list?

[shmebulock]

I have just gotten into Tyranids with the leviathan box, and now I want to get up to 2000 points, but have no idea where to start. any recomandations for models or units would be much appreciated, I play with a circle of friends so no need for super competitive lists but I would appreciate it. For reference my current list (The leviathan box) is below. 

+++++++++++++++++++++++++++++++++++++++++++++++++
+ FACTION KEYWORD: Xenos - Tyranids
+ DETACHMENT: Assimilation Swarm
+ TOTAL ARMY POINTS: 930pts
+
+ ENHANCEMENT:
+ NUMBER OF UNITS: 10
+++++++++++++++++++++++++++++++++++++++++++++++++

CHARACTER

Char1: Neurotyrant (105pts)
• 1x Neurotyrant claws and lashes
• 1x Psychic scream
• 1x Warlord

Char2: Winged Hive Tyrant (210pts)
• 1x Tyrant talons
• 1x Monstrous Bonesword and Lash Whip

BATTLELINE

10x Termagants (60pts)
• 10x Termagants
• 10 with Chitinous Claws and Teeth, Fleshborer

10x Termagants (60pts)
• 10x Termagants
• 10 with Chitinous Claws and Teeth, Fleshborer

OTHER DATASHEETS

5x Barbgaunts (60pts)
• 5x Barbgaunt
• 5 with Biocannon, Xenos Claws and Teeth

11x Neurogaunts (45pts)
• 1x Neurogant Nodebeast
• 1 with Xenos Claws and Teeth
• 10x Neurogaunt
• 10 with Xenos Claws and Teeth

3x Von Ryan's Leapers (75pts)
• 3x Von Ryan's Leaper
• 3 with Leaper's Talons

Ripper Swarms (20pts)
• 1x Ripper Swarm
• 1 with Xenos Claws and Teeth

Psychophage (125pts)
• 1x Psycholastic Torrent
• 1x Talons and Betentacled Maw

Screamer-killer (170pts)
• 1x Bio-plasmic Scream
• 1x Screamer-killer Talons

[dkng]

The Levi box units are mostly mediocre. Neurotyrant and Barbgaunts are decent, the rest is rather meh. As for now best choices are Neurolictors, Exocrines, Pyrovores, Maleceptors, Gargoyles and Walkrants. No clue what can change in January.

[kubimaniac]

I bought only singles from the Leviathan box and those were Neurotyrant, Winged Prime, Barbgaunts, Neurogaunts. Neurotyrant is really good in Synaptic Nexus (enhancement), especially vs Sisters cause of T3. But the flamer is generally good because of our flamer limitations (Pyrovores aren't cheap if you are a new player). The Winged Prime is only good in vanguard with a squad of melee warriors. Barbgaunts solid unit in invasion and neurogaunts okay chaff (outshined by gargoyles and ripper swarms).

I would drop the psychophage and screamer killer, maybe the leapers (they only work in vanguard), and try to add at least 1 Maleceptor, 1 Exocrine, have at least 2 Neurolictors, 1-2 Gargoyles and of course a Deathleaper. You will have a solid base and from there you can choose where you want to move next.