First, i'd like to start with a very small suggestions for bases.
How about a change of the base log to make it look like the ship log?

Instead of:

Sereomontis activates a Charged Exo-Clamp on the base.
Sereomontis activates a Charged Exo-Clamp on the base.
Sereomontis activates a Charged Exo-Cla... ETC.

It would be: Sereomontis activates a Charged Exo-Clamp on the base (5).

I think we can all agree it would be far simpler this way.

Now, secondly i'd like to see some new Silthion NPC's. I figure the Hybrid Cluster needs some accompanying, smaller NPC's.

Now, we might not need this one, since the regular queens are visible up to rank 9,999, but Dan could lower that to 900, then add this thing, or maybe use them both at the same time.

Silthion Hybrid Queen.
She is the leader of a Silthion Hybrid Colony, and is usually not found far from one. Though far less dangerous than a colony, this Queen should still be considered a threat.
Rare Elite Insectoid.
Top 3 Elite.
Shares with ranks 900-3800.
Randomly spawns while the Controlling the Silthion mission is active.
Rank: 1000
Shields: 0.
Hull: 240.000.
Abilities: Regenerative Exoskeleton. (Will sometimes Regenerate a small Portion of hull(1)) Hive Mind (Immune to Improved Mind Influence)
Attack: 26.000.
Defense: 22.500.
Cloak: 800.
Rewards: 3 x Silthion Hybrid Sac(2), Silthion T-Plasma Vesicle. (estimated drop 50%/50%)
(1) I'm not sure if this should be slowly over time, or randomly when hits occur, up to Dan i guess.
(2) Like the Sacs of regular Queens, but 300 energy each, rather than 100.


Ok, over to a more common one.

Silthion Hybrid Drone.
These Drones are a common sight around Hybrid Clusters, and are the most common and versatile units the Silthion have at their disposal. Though usually only tasked with repairs, and Synthesizing T-plasma, they will lay down their lives without hesitation in protection of their home.
Uncommon Elite Insectoid.
Top 4 Elite.
Shares with ranks 900-3800.
Randomly spawns while the Controlling the Silthion mission is active.
Rank: 900.
Shields: 0.
Hull: 560.000.
Abilities: Regenerative Exoskeleton. (Will sometimes Regenerate a small Portion of hull) Hive Mind (Immune to Improved Mind Influence)
Attack: 32.400.
Defense: 38.500.
Cloak: 100.
Rewards: Hybrid Exo-Plating(1), Silthion T-Plasma Vesicle. (estimated drop 25%/75%)
(1) To replace the Silthion Exo-Plating. Size: 14. Hull: +280. Should have some added bonus, but i cant think of anything good.


Now for something a little tougher.

Silthion Hybrid Soldier.
The Fighter of the Hybrid Colonies. Bred for the singular purpose of defending the hive from potential threats, this Insectoid should not be taken lightly.
Uncommon Elite Insectoid.
Top 4 Elite.
Shares with ranks 900-3800.
Randomly spawns while the Controlling the Silthion mission is active.
Rank: 900.
Shields: 0.
Hull: 900.000.
Abilities: Regenerative Exoskeleton. (Will sometimes Regenerate a small Portion of hull), Hive Warrior (Will sometimes double its own attack.) Hive Mind (Immune to Improved Mind Influence)
Attack: 46.000.
Defense: 30.500.
Cloak: 0.
Rewards: Hybrid Bio-Energy Cannon(1), Silthion T-Plasma Vesicle. (estimated drop 25%/75%)

Hybrid Bio-Energy Cannon (1) Ship Mod. Size: 19. Attack: +255. Hull: +375. Limit, 3 per ship.
A very powerful and sturdy weapon created by Hybrid Clusters for use by Hybrid Soldiers.

Well, that'd be about all ive got for now. Any thoughts on these things?

I personally
+1 for base log update
+1 for the new NPCs -> I would suggest to implement them as part of story line suggested than random spawn while mission active.

I would rather see some new NPE race(s) than an extension of the unrealistic space bees.

but otherwise +1 for both, and definitely the base one

Some ideas need to be polished, but overall I like it
+1