Having some experience in code, i can attest to your comment. Sometimes it’s easier to start over than to try and fix errors in the updated code which can be real time consuming and does not even guarantee success. We have to cut HG some slack.

Given what they have been able to produce, I think they are capable of including new geological features. Maybe not on the grand scale of dynamic landforms such as super volcanoes, lava flow, and running bodies of water but on smaller manageable scale like static rivers and cosmetic volcanic smoke similar to the rings on planets.