I think the way to solve this issue is to graphically put water in over the items that should be submerged, such that the item 'Block' still exists, but appears to be submerged. This would make for some odd phenomenon, however, which would be unfortunately difficult to fix, such as water actually being air where a sign block is placed, and water not flowing further. The way to fix this, I guess, would be to include a part in the game where if a 'graphical water' has an empty space to any side(except up) open, it will place a non source water flow.
Oh, and I do vote for having sugarcane not following the new ideas for water physics. I like underwater farms/ airlocks!
I think the way to solve this issue is to graphically put water in over the items that should be submerged, such that the item 'Block' still exists, but appears to be submerged. This would make for some odd phenomenon, however, which would be unfortunately difficult to fix, such as water actually being air where a sign block is placed, and water not flowing further. The way to fix this, I guess, would be to include a part in the game where if a 'graphical water' has an empty space to any side(except up) open, it will place a non source water flow.
Oh, and I do vote for having sugarcane not following the new ideas for water physics. I like underwater farms/ airlocks!