Yes, there is Valenwood Improved original and a TWMP adaptation, and apparently it's best to use both.
I haven't done it yet, but I fully plan to investigate it and get it installed. TWMP is supposed to be compatible with Elsweyr, too.
Regarding Falkreath - we are going that way!
We entered Skyrim just South West of Riften and walked around there, and now we are moving West more or less along the border. I am currently adapting a mod called "Skyrim Alive" - the author gave me a blanket permission to go play. This will be my mod for Southern Skyrim. Riverwood is the next big settlement (combining TWMP Skyrim Improved and Skyrim Alive), then we'll continue on until we reach Falkreath. I'll report what we find there.
I plan to build Helgen as well. Then we'll see how Falkreath works, but I think it should be Ok - TWMP landscapes are very close to vanilla Oblivion in that region.
FYI: to see some screenshots, have a look at
Lena's fanfic - the most recent entries are all in Skyrim.
This post has been edited by Lena Wolf: Oct 8 2021, 08:11 PM