Hmm, as player with multiple accounts, who has reset accounts, played iron man mode and threaten/thought about leaving twice (powerplay an multi-crew) My 10 cents.
The majority of players (according the the dev that was on Kerrash's stream are combat focussed) - hey FD have the telemetary. FD are trying to balance small fightrs in inexperience hands (one of them can be an NPC) all the way up to PvP Corvette class multiple player engagements. Expect Combat tweaks every release, as that is a large task, and evem more difficult with multi-crew. I really do not get the "other roles have not had content" argument, particularly by the explorers on the forum. 2.0 with the SRV clearly benefits explorers, otherwise there would not be buffs happening to the Diamondback Explorer so it can take an SRV, tied with FSD synthesis, 2.0 has a huge increase in FSD range. Some explorers have embraced this and gone to places that could not be reached before.Some just moan that the mechanic has not changed in 2 years. Not even going to get onto the Formodine Rift and Gurdians, UAs and othe other things to find uot there. Hey even miners got linpets

(I like mining before anyone asks). I give you the display of the planet in the surface map, in the most recent public build - that was debated by explorers in beta and added nothing for any other career - do not see the combat crowd moaning.
About the only group of players (doubt many exist anymore) that can moan are PvP bounty hunters and pirates, these career have gone backwards not forwards, unlike miners and explorers.
I do not consdier any of the mechanics in ED to be placeholders (alas not even holopresence coming in 2.3). POI, USS have all been refined and are th basis of the prcedural encounter system and crafting. Do not expect this to change, but perhaps refined over the next 5 years. If your looking for mechanical changes, not enhancements well - I think your gonna get salty.
In terms of resetting save. ED in line with other sanbox MMO style games (thinking LoTRo as an example), suffers from power creep and lack of meaningful end of game content (when you have your billions and Elite in one or 2 ranks). It has player groups and the BGS as its end of game content, which is a bit more than some MMOs out there, at least you are using the mechanics for a purpose.
I think I have come to terms with multi-crew. Still hate it. I think I can ignore it though, as the majority of players on this forum will not use it, or not use it on open,where I live, so I do not expect it to b popular. Those that would use it could have winged up anyway.
Simon