First of all, your comment is completely ludicrous. "You shouldn't need to be rewarded to play the content." And yet, the overwhelming majority of online games have some sort of progression system. I guess developers and players worldwide have some sort of screwed up motivational driving factors. You know, like experience points, currency, loot drops, badges, etc.
Addressing the OP - I think some of your points are valid. When things are basically thrown at you, you don't value them as much. I remember when we had 'SG mode' and, at higher levels, you had to decided to prioritize earning influence or prestige. I understand why the 'secret server' changed that - they just didn't have enough players. The Homecoming team inherited a lot of design decisions from the 'secret server', and not all of them good. The fact that everyone can build their own huge base has had a negative impact on supergroups. One of the reasons to join an SG has been removed. (Not all - just one.)
Having said that, I don't think any content is obsolete. It may be grindy. It may be less fun. But content is content and it should stay around. Like we can still do the original Positron task force even though we now have the new two-part Posi TF. We just need new and better content - which the devs ARE producing. It's just a very slow process with a small team of volunteers.