As a lowly Bronze on QFF and Red on VFF, my focus is moreso on being able to find / redeem (minimum) business cabin reward seats, rather than have passive benefits such as priority boarding and lounge access, as business reward seats would include these anyway.
I understand that higher tiered members will have earlier access to reward seats, but as a Bronze I've still been able to find flights on dates that I need - whether via luck (that they're still available) or via perseverance.
I also don't travel much - once a year for an overseas trip and maybe once or twice a year domestically if that.
If I was travelling for work, then maybe I'd have a different view but for me as an office worker whom is working 50% from home and 50% in the office with no air travel required, Gold (even Silver) wouldn't mean that much to me.
I'd say keep the thresholds etc as they are, as they provide no benefit to me, and for the current higher tiered members to enjoy their perks 
