Afraid not, if a real fix is going to happen it's going to need to be done by the UDK team. I gave a better explanation and examples in this thread, for more modular stuff for people who find this.
YEP! Lightmap generation is coming in 4.5 and it's awesome! Internally we've been using it without problems. It's great to be able to crank out modular variants and not have to recreate lightmap UVs.
Kick ass. Thanks for posting Adam. Those skeletons were a nightmare to sort out but well worth their modularity. Hunter, you and Tohan did an amazing job with that boss! - BoBo
What everybody suggested above is great. I must add in is it possible you would consider using modular pieces for the walls? I think it would save time , ect.
What I'm working on at the moment; modular railway tracks. This part tiles seamlessly, but is still missing the parts that bolt the tracks to the sleepers. Let me know what you think.
Been working on high poly wall section. Hoping to generate modular objects and textures from a series of these. Next attempt will try something more subtle, little less detail.
Baked out the pieces and created some modular pieces, currently experimenting with colours and levels of wear, I imagine the paint colour and amount of exposed wood will change throughout the project