-New worldspace: The Small Addition.
-Absolutely, without a doubt, not lore friendly. =P
-110+ Buildable Betho Blocks (thank KilaJosh for the new block and baseplate models, and some of the textures and a new electrical outlet to boot!)
-New settlements.
-New('ish) dungeons.
-New('ish) weapons (one broken...lame), new('ish) clothing (male and female) and new('ish) helmets (male and female). 2 color variants of many.
-New races/factions (some friendly that will also spawn in place of vanilla settlers in this worldspace's settlements, some factions that are quite unfriendly).
-New turrets.
-2 new companions (See change log. Better, but still speaks in the native tongue of ImSoLame'ia).
-1 new power armor set (still needs a lot of work).
-1 perk (exclusive to this worldspace) to boost jump height (optional separate file download). Perk gained from "Message in a bottle" just to right of entrance to The Small Addition. Looking at the Dollhouse, turn to the right, it's on the table. ("Message in a bottle" is temporary art for object...will put it in something a little more appropriate eventually).
-Most definitely a work in progress.

IMPORTANT NOTES:

1) If the menu doesn't show up in workshop mode, leave the settlement location and return to kick the script into running.
2) Best to do your 'just out of the vault 111' and Concord stuff before installing.
3) It's best not to become too attached to the way things in this mod are (mostly speaking of object placement), they change sometimes and will continue to do so while this mod is in WIP state. Sorry. =(

Entrance to world is just on the edge of Concord on the second floor of a house (as shown in the above image).
Step out of the Museum of Freedom, turn right, walk to the end of the block, last house on the right.
Fast travel marker will appear following the player character's first entrance into The Small Addition.
If you are in a hurry, open the console with ~, then type "coc poiasa" (minus the quotes) and click on the dollhouse.

This will be expanded upon, at least in regards to locations, dungeons and further development of the new faction...all sorts of stuff. ;-)
Suffice to say, there is much more to do and plenty of room for improvement. =)

Quests, well, may not come anytime soon. I just don't seem to be getting any interesting ideas (or the hang of building them). I may revisit quests at a later date or, perhaps, enlist some help.

Edits cell 0000DDDD in the Commonwealth, on the outskirts of Concord.
Mods that edit Concord *may* be incompatible with this mod. However, as long as that building (or a suitable 2 story building in it's place) remains, there shouldn't be any issues. 

Plenty of bugs to find, I'm sure. So, please feel free to report them, along with any suggestions to further flesh out the worldspace. ;-)

P.S. I started out with the intent of about 2 hours of gameplay...but ended up somewhere around 1 hour. I'm still still calling it a win, as this is my first full worldspace (I've done settlements in this game and several other items for other games).
Also, it's hard to write this without spoiling what everything is (which is important, at least to me). So, pardon if I've missed an important note. =/

Be kind, helpful, and remember that someday you may need help and that it might be a good idea to keep bridges un-burnt. ;-)

..."Be kind, helpful" like these four good souls:
KilaJosh For the new block and baseplate models, some of the textures and a new electrical outlet model to boot!
ReaperTai For so much help in testing, I can't begin to thank him!
Azraal For support and always good suggestions! (Thank Azraal for the Betho Block idea, heh)
Tarsis31 For just being an all around good helpful guy!

Some good testing and help they've provided me, and I appreciate it greatly. =)


Notes:
Changes:
-Ver 1.05.0:
 -See changelog

Please remember, to uninstall:
To uninstall, please exit the settlement's location, save and exit, then uninstall.