Building is so much easier and so much better when i can look use creative on a single player world. With schematica everyone will be able to improve their building and develop the server much faster. We should consider adding schematica into the modpack. But I am not sure how difficult that would be.
to quote myself
We aren't adding any mods to 3rd party packs, due to the installation complications it adds for players.
Sorry, but thanks for the suggestion!
As a side note, we did this in the past and gave up on it.
You can still install it client-side I believe, I used to do it on a server, and use the ghost-overlay block aspect of it. You just won't be able to use the auto-place block cheaty thing.