Struc editing

[GoodMorning]

When in-level Struc editing is enabled, there is a minor point I'd like to make:

Erasing can take out pre-built Struc, which I am yet to see a cost to having, if not maintaining. An option for this would be good, but "do not rebuild" would be nice.

Also, when painting armoured Struc, the armour cannot be "painted over" regular Struc. This may be due to a cell having only so many states.

Finally, on the subject of Struc, if player and opposing Struc ever end up on adjacent cells, they join smoothly, instead of having a beveled edge. This can intermittently make it hard to tell exactly where the edge is.