I agree it would be awesome to have textures for each game entity in Command represented in TacView. The reality is that this is just not practical. Firstly the database as it stands has over 100,000 distinct entities. To texture all of those entities would, at the superhuman speed of half an hour per entity, equate to 34.5 years of 8 hour days, without taking weekends off.
Of course, thinking about creating accurate 3D models and nice HD textures for 100,000 entities is not realistic.
I don't think that players who want aircraft textures (instead of the blue/red aircrafts in TacView), want all these 100,000 entities to be modelled and textured.
Yet, if TacView could feature (thanks to the community) 3D models and textures of aircrafts that we see in missions, it would be already great.
There are two files that list aircrafts and helicopters used in the game: Associations_DB3000.xls and Associations_CWDB.xls, there are also 320 obj files in the \TacView\Data\Meshes\ folder.
If one day, TacView get support for textures, this is where to start. It would still be a huge task, but with time and thanks to the community, it's doable (but of course not for these 100,000 entities, nor for every variant of aircrafts).