Yep, it would be really easy to change the constant - I think anything more would take more time (and should probably be planned for the next hard fork if we do so)
We were actually originally (pre-launch) thinking on the minimum deposit lines as above, with the ability to “delete” or deactivate an account - but we realized it would take a bunch of time to implement, and there wouldn’t be that many accounts at first.
Re the long term solution too: Another component is if Snapps ever allow more data to be placed on the account, that will also be a place where there should perhaps be a cost to adding more data. We’ll probably need some long term solution if that becomes a thing (or just the number of accounts goes up a lot). I wonder if some kind of state rent could make sense for it, but I haven’t done much research on it yet