Your Yard area has more of what you need and some things and none of what you need in others.
It is cool looking but you will need functionality more than cool looks.
You have an arrival and departure track(this is a good start).
You really need a Drill track and it needs to be as long as you can make it.
You dont need all those sidings unless you plan on Storing cars in your yard(very bad idea)
Yards are meant for sorting and sending.Hidden storage is a much better idea.Determine the amount of room in the yard you need by determining your basic operating situation.this will tell you how many arrivals you will be dealing with and how much holdover you will have in trains that are made up or sorted and ready to be made up.
Add an interchange track if you can bringing in a train from Off layout(hidden staging) this will drop off cars and pick up your interchange cars.This really improves the operating feel of your layout making you a part of the national rail system.
You have a nice long mainline which is fabulous and will make it nice for those times you just want to watch them run.
This design crys DCC,give me DCC.
Others have mentioned the need for runarounds so i'll just second that.
You have a very good rough draft and something to work with for sure.
Fine tuning it takes time.Dont get in a hurry to fill the area with trackage.Do get your mainline in if you are in a hurry and really want to operate some equipment.You can always cut in switches later or reroute if you have to.
Continue working on the plan,fine tuning and rethinking the yard area.
Andy sperandeo's new book Freight Yards is an Invaluable book that will teach you alot about yards,what each track is and does and how to lay out a yard for best operation in the given space you have.
Read the thread i started on breaking down the plan.Now is a good time to get yourself organized right away at the beginning of this adventure.
I see a Mogul in the making
