I see we already have several people on the case with giving input.
Thanks everyone (but please keep it civil, no personal insults :))
@SaIInS as pointed out, we can’t just copy something from another game for many different reasons. The foundation issue has been noted down quite a while ago but it has generally been down prioritized due to more pressing bugs.
A triangular piece like that was discussed during EA but it was an active decision to not add it because there are already so many different pieces and it would be quite a challenge because not all sides are the same length and you can’t dynamically adjust the sites.