Something we're considering is allowing user-defined consensus parameters. Essentially rather than us being the gatekeepers for changes like supply or mining algorithm, we load these from disk at startup. Want to cut the supply? Update the config, and then convince others to adopt your new configuration. Want bigger blocks? Same. Faster/slower blocks? Same.
So this would be consensus-based changes, or are you talking about the ease of creating forks? I think the mining algo you described earlier sounds fine.... So long as transaction fees are also included in the block reward, I don't think people will stop mining DOGE.
On my own account as I don't have the Dogecoin password on me - it's a way of allowing users to create their own hard forks, and as with any hard fork whether it's adopted or not depends on consensus. Essentially a lot of proposed changes we don't try, because we're fairly certain that we can't get consensus on them (and/or they're just a bad idea), but we shouldn't be the gatekeepers for changes, the community should. So if someone can get consensus on a new hard fork, and get enough people to adopt their suggested configuration, it should become the new main fork.
Hope that makes sense!
Also enables people to make their own forks for playing with (given the pre-AuxPoW fork is still active, some people clearly like just having their own space to play in).