Development environment for debs and snaps for raspberry pi 3?

[Dan Kegel]

Hi,
I'm building debs and snaps for a raspberry pi 3.
Questions:
1) when last I did this, https://ubuntu-pi-flavour-maker.org/ was the
best place to get real ubuntu for the pi 3 (the one listed on the
ubuntu wiki didn't boot reliably).  Is that still true?  What do other
folks use?
2) if one were to want to use the official snappy core ubuntu 16.04
for raspberry pi 3 as a development host, is there a reasonable way to
do that?  e.g. installing lxd on it and running an ubuntu desktop
environment inside lxd?
3) more simply, is there a snap for snapcraft yet (aside from whether
that's useful)?

Thanks,
Dan