Solution: Buy a bunch of old metal war walkers...and do a terrible job assembling/painting them.
This was a bit of a "I know better" moment for me. I decided to batch-paint my war walkers. I used plastic weapon components and plastic weapon shields ordered off of ebay. I decided to magnetize the weapons - not because it allowed me to swap weapons, but because it was the only way I could figure out to attach the weapons to the warwalkers themselves.
Again, my stupid insistence on using white/purple paint schemes made me pay. The spraying was easy but these old War Walker models (which were bought painted, stripped etc.) are really poor old casts. A lot of mis-aligned bits and bad connections. Overall just really miserable to paint. I just pushed through it, and painted them. I'm not very happy with the results though they look fine at table height. On the flip side, I love the "look" far better than my current plastic war walkers.
This is one of those things which will probably slowly nag at me game after game until I do something about it, but I sure as hell am not going back and re-assembling/re-painting these warwalkers.
Ranting now...anyway, I've added a healthy dose of "pew pew" to my Eldar force. War Walkers aren't useless squadron vehicles with no armour back in 2nd edition. They can actually fight along the front sometimes.
Better pictures should follow at some point. I took a bunch but they don't really show up that well.
Some additional pictures I took:
