I could see a need for dismounted cavalry:

http://www.firstlegionltd.com/images/newimages/bufordcavalry.jpg

http://www.firstlegionltd.com/acw038uniondismountedcavalryhorseholder.aspx

Infantry at Bull Run with havelocks:

http://moultrie.battlefieldsinmotion.com/BiM_images/Old_photos/1861-07-69th-NY-1st-Bull-Run-x-Don-Troiani_lrg.jpg


Infantry with greatcoats would be really useful:

http://api.ning.com/files/BpcxhYIbWSajkmwUtUS60oVng*gUGepf-eh4gKA673nJ22eM8TEWfIw2m6Vs2vMicgZy-nzeSdpJqMkaS1LPJ5w6R2izGwZv/IrishBrigade5.jpg

https://tomverenna.files.wordpress.com/2012/12/irishbrigade11181101.jpg

http://ironbrigader.com/wp-content/uploads/2010/12/laying-pontoons-fredericksburg.png

https://ansionnachfionn.files.wordpress.com/2012/05/69th-new-york-infantry-brigade-the-irish-brigade-including-the-irish-or-fenian-sunburst-flag.jpg


And the Irish Brigade with early uniforms with sack coast, gaiters and hardee hats aren't available:

http://www.minecreek.info/sack-coats/images/8747_3_13-chicago-zouave-cadets.jpg

https://s-media-cache-ak0.pinimg.com/736x/67/3b/82/673b829961d5cd9d9d45749e44d9fe11.jpg

Of course, the last thing I need is Strelets to make another subject I will buy. I am going to sink a lot of money into those early WWII sets.