Finaly you make some actuall points I can understand and that makes sense. Tho your "gotcha" way of discussing is annoying to me I can see where you are coming from now.
So basicly on the ground level of things we actually agree and want the same thing. We both want to partake in our own content without feeling forced to do content we dont want to do and not feel like we are performing worse due to not partaking in said content.
Taken my time to think about it, the only way for both of us to be contempt as well as most of the playerbase (I am speculating and not speaking on the behalf of everyone here) would be to further split apart the gear rewards for different content.
How about this, different contents gear rewards giving you passives, stat or ilvl buffs for partaking in the content you are doing. Example, Eureka weapon having 405ilvl and giving you a passive buff either to your spells/skills or a flat stat buff whenever you are inside Eureka or doing open world content like hunts. fates or beast tribe quests etc.
405ilvl raid weapon doing the same for raid and trial duties.
And then you can have the tomestone weapon beeing uppgradeable to 405ilvl and start at 390ilvl without any passive buffs making it the generic weapon good for both but not the best?
This would personalise the rewards to whatever content you are doing while also giving a middle down the road tome weapon reward to help progression with both and not mess with the current gear progression curve for raiders?
A philosophy in MMO game design that I am personaly a big fan off. Giving multiple options for different players and rewards relevant to the content they are partaking in.
I am tempted to further discuss our points that we had, but I dont think it would go anywhere. Its more down to a different point of view from different players, and I`d rather enjoy speculating about possible solutions or changes to the game to make players more happy now that you have given me your point of view and I can actually understand where you are coming from. There is no reason why raiding weapon should be the best for grinding or vise versa. At best you could make the "raiders put more effort inn" aproach but even then effort can both be meassured in skill and time investment.
PS: Ultimate weapons imo should allways be bis for their relevant tier as it requires a way higher time and skill investment then all other content. If you beat ultimate while its current content you deserve to smash any other content you want with a OP weapon for a while.