I know you mentioned not doing battle damage, but I wanted to make a note on weathering and then I can speak to your initial request. Weathering is something that crops up every few years. There is no official approval on weathering right now. If someone wanted to push weathering through to match a specific source, it wouldn't outright be shot down, but they (and we) would need to work with the LMO on it and it should be expected that the weathering would need to match the source exactly. To date, no one has followed that through to the end and troopers have for one reason or another decided in the end to take the easier path to approval.
On to your question, if not doing weathering, what specifically are you looking to match in this figure? Most of what I see is pretty spot on to the current CRL. The Silver lens, frown, vocoder combo is approvable. The pouches are not currently approval. The DLT is already an option for the Shadow Stormtrooper, so no problem there. Leave out the pouches and you are essentially creating a standard shadow stormtrooper that won't have any problems being approved.