... i would love it if someone made some new ship models to add to the vanilla races in sins. ive looked around and nearly all mods that involve new ships are total concersion mods tat will probably never actuallly be released...
You have not looked around enough... in 7DS, you have the vanilla races and a copy on steroid of the vanilla races...
The TEC, Advent and Vasari are almost not changed... The TCA, The Unity and The dark are the vanilla race on steroid... these vanilla race on steroid was needed because the fully new races was too much strong...
In the release who will be out today ( 7DS 2.0 ), not all the ship and structure are new models... it don't mean that new models don't already exist... Modder, texturer and modeler are working on them... for example, below, you can see new models who will replace the Vasari models...

One advice... try to make one model yourself, design it, segment it, make the UV, texture it, make the hardpoint, convert it to .mesh, create the ability, the entity file, the icon, etc... If you are good, you will be able to make one model in one month... not, count the number of models in Vanilla, add the orbital structure... and you will see the huge work who is needed... after this, you will maybe understand the long delay for release a mod, the huge work who is invested in it...
there really is not a lot of active modelers in this community surprisingly. thers only like 3-4 people that i know of that are actualy creating new models.
StCobalt, you will be surprised... being a modeler myself, i know maybe 10 other... and this from only a few mods... Texturer is a other problem... i have begin texture my own model because it is hard to find a 2D artist for paint the texture... but until not, the more big problem is too find people able to use XSI, a obligate step... i have try, follow the Stardock tutorial, but it is always misluck... in the last few month, i have maybe make 50 models... but only one have go over the XSI step and have be see in game ( covenant carrier from the halo mod )...