Posts: 3,384
Threads: 104
Joined: May 2012
Staff roles: Balance Dev
As pointed out, cash sinks in the technical sense are not one-time payments, they're recurring ones that permanently take credits out of the game. Ideally you balance those with the faucets (NPC bounties, trading profit, etc) so credits keep more or less the same value. Discovery actually has virtually none of these, and the ones that do exist are minimal: PoB maintenance commodities & ammo (missiles, mines, nanobots, etc) costs.
If I manage to read this whole thing I'll edit this reply with more thoughts, probably.
And yeah, Discovery has virtually no endgame content which is a problem that genuinely needs to be addressed. Without carrots to chase for veteran players, why log in at all?