Im glad someone would be happy to play me. The main concerns I feel would be size, as obviously the only important part of a model in terms of playing against is its size and
LOS.
As with all my coversions I always try and keep the conversion on a similar scale to the actual model, that way it doesn't mess up any
LOS and give me a advantage. So the most difficult bit would be to ensure that the models when prone roughly fill the same space as a jetbike.
I think in order to create a more armoured look I am definitely cosidering shields as a start. I think they would be a good basis for what would be a heavy duty 'jump' infantry look. Obviously with a
DE/eldar army they have pretty small/slim bodies as it is. So I cant really add a huge amount of armour else they will look a little silly.
However, on that note I can certainly use a little
GS to take their armour plates up a little in size. I think
id have to go with a prototype model

see how it looks.
I am just loving the idea of a winged seer council. I can get a true valkyrie feel.