Have you been working on this thing by yourself? Have you ever shared it before? This looks like it has gotten very little attention so far, especially in relation to how good it seems.
What was your main motivation for building a new program rather than improving an existing one like FreeCAD?
A list of advantages and disadvantages should be done by somebody without bias. I will give you an example: I have incorporated 'git' revision control. With every update, files are wrote to disk and a git commit is made. With this git setup, I decided to exclude the typical 'undo' command and have no temporary files. I consider this an advantage because you get revision control and very little, if at all, loss of work when a crash occurs and the code base is cleaner and eliminates a fruitful source of bugs. Others might consider this a disadvantage because there is no traditional undo command.
Yes this is my pet project and haven't done any type of promotion until now.
I actually worked on freecad for a while. People familiar with freecad will recognize some of the things I made for freecad that I used in cadseer. I think freecad is great, but I wanted the freedom to do my own things, for better or worse.
The git integration sounds brilliant and reminds me of Fusion 360's timeline functionality with which you can go back to an edit you made, change something about it and have the change propagated through all later edits: Sounds a lot like rebasing!
Now that you're promoting it and still calling it "alpha software": Are you putting effort into polishing it up? Doesn't make mucb sense for people to invest in it if it's going to remain in alpha state, after all (though it seems like you're using it successfully, so maybe it's not that bad?).