What would you do differently from Weebly?
Be able to hack the source. I miss that.
If they've completely rewritten the source code, do you think they would be willing to let you have the rights back to the original version again if/when they decide to shut it down?
The original Lisp version of Store is still there, btw. I know because I use it for paulgraham.com. The new rewritten version was sufficiently different that you had to choose to "upgrade," and I never have.
I keep worrying that one day they'll shut it down because I'm the last user, and I'll have to write another web-based site builder. At least then I could support css.