There has been a back and forth between gas and spice trees recently due in part to the limited zones that they can be placed in, along with they can be placed in almost all of the same zones.
I propose
1) a small region that only allows gas and a small region that only allows spice. Each totalling in like 20 trees split between like 4-5 streets.
2) Let gas and spice trees be planted in some of the same zones as bean and fruit trees. Like say Besara which has a couple gas trees left over from when they could be planted there if I was told correctly.. (Actually went to kill fruit trees to replace with gas trees to be surprised that I was unable to plant the gas tree. very sad).
Any other solutions or propositions people have more than willing to hear and listen to differing opinions.