I guess it depends on if you want to model the early gun on a pedestal or the later hanging version . Looking at the pre production sprue shots it looks like you can just add the roof and hanging turret , thus you can use the 250 as both a troop carrier or gun track . If you want to go the whole hog and do a complete early gun track interior with pedasal , you only can use it one way . And yes it sucks that certain versions are only available as extra add- ons , but I really can't see too many gamers wanting all these special versions like us modellers do . so its either Rubicon put it out as an extra ( big thumbs up to Rubicon ) or we have none . I can see myself getting most of the add on kits , wether its the radio set just for the seated figures , or the Stummel set to add to a plastic Puma body to make a 234/3 . Hey how about using the hanging turret on the Puma to make a 234/1 ? Damm , now I need another Puma
Rubicon dosn't have to release all these kits with a choice of versions , they could have released 3 complete Tiger kits , both a SU-85 and a SU-122 kit , and what was in the box , 3 or 4 versions could be made from the Stug III kit ? Other companies nickel and dime you to get the vehicle you want , personally I think they are giving us great modelling / gaming value for our money.