Mod at your own risk has always been the case. There will be mods on release or shortly after to change whatever mechanics people have issue with. Currently I think its better to let the devs get on with it rather than mod things in and out that will likely be changed anyway.
On the other hand. Minor gameplay mods such as remove multiple damage ticks when moving through fire/acid/poison gives you a sense of how the game would play if that one mechanic would change.
I will most likely try out the bigger rules overhaul to see how the game plays as well (in relation to enemies, hp, etc.)
