The 6 legs are all in cool dynamic poses, it is possible to swap them but it would require some work to make them look good. You get 7 torsos, 2 of which have to use the jackets, but they could probably be trimmed off. The right arms are very easy to convert, all you need to do is trim off the harlequin kisses and the open hands are ideal for catchers, alternatively the swords can be cut off.
The left arms are much more problematic as they all come with guns, even with these cut off they will still look awkward. i think the only way round that is to swap the hands. You also get 7 heads, 5 of which can choose from 13 different masks. So you just need an extra pair of legs to get 7 models. This does mean the legs will be even harder to get hold of from bits services.
I am still liking the idea of using more static poses for the linemen as it helps the positionals stand out. Having everyone jumping or flipping would possible work for wood elves, but less so for high and dark.
One great source of legs for bloodbowl elves is the old dark eldar warriors. You can either leave the spikes on for dark elves or trim them off for good elves. Below are a couple of test models using new dark eldar top halves, the model on the left has a mask from the wracks which adds even more mask options.
Close ups of the bits can be seen here.
