Modifying eType and thingClass

[WorldOfIllusion]

First off, sorry if this has been asked before.
Secondly, my actual question. Is there a way to modify an eType to include aspects from another eType (and similarly for thingClass)? For example, I want to have a Plant eType with some of the aspects of BuildingComplex eType.
Or, rather than this is there a way to give a definition multiple eType's and multiple thingClass's to avoid having to modify the eType's/thingClass's at all?

[Rokiyo]

The ability to create entirely new thingClasses should come with Alpha 3.

For now, you're limited to the following eTypes, and I'm not sure how Alpha 3 will impact our ability to expand  upon (or combine) these:

Code Select Expand

Undefined,
Pawn,
Item,
Apparel,
Equipment,
Filth,
Fire,
Corpse,
Debris,
Puddle,
DropPod,
Plant,
Floor,
Roof,
Mote,
Blueprint,
Projectile,
ItemSkyFalling,
Rock,
SteamGeyser,
BuildingComplex,
BuildingInert,
Frame,
Wall,
Door,
Bed,
Building_WorkTable,
Building_Table,
Building_LaunchPad,
Building_PowerPlantGeothermal,
Building_PowerConduit,
Building_Battery,
Building_CommsConsole,
Building_ResearchBench,
Building_Turret,
Building_Chair

[WorldOfIllusion]

So is there no way to, for example, have a plant with components (from BuildingComplex)? Cause there are a lot of cool things that would need this kind of stuff to be made, for example a plant that generates power or (what I am working on now) a plant that creates a small amount of light (and then of course can be used to make other glowing things).

*EDIT* nevermind this, turns out most of the behaviour I want to alter is actually contained in thingClass and as such will (hopefully) be available in Alpha 3. Now to wait for Alpha 3.