Not gonna happen, they need to limit our progress somehow in order to prevent people from just gearing everything within a week and then either being done with the game for the patch (and therefor: Not paying anymore, losing them money) or complaining that there is nothing to do.

This limitation isnt meant to be "meaningful" or "fun" to you but to both protect yourself and the company from you burning through content.

Besides... there are ways to gear up your jobs besides tomestones - you can have all of your jobs at an ilvl of 380 within half an hour if you buy the gear of the marketboard.
Not to mention raid-gear from both NM and Savage.
Even if you'd happen to raid on all jobs and need good gear for all of them: 380 is "enough" to clear those raids, given you're really, really good.
And if you dont raid, 380 gear is more than enough to do anything in the game comfortably.

...if you happen to only want an ilvl of 400 (or rather 390...) for the sake of it... the system is pretty much working for you.
Gear is the only progression we have at endgame; its gonna stay limited, to allow for everyone to stay "on level" (instead of having some people grind it out day 1, leaving those who cant behind in the dust); keeps you subscribed (sorry, after all SE is a buisness and "only" after your money); prevents people from burning through content on day one and not having anything to do afterwards (good for both the players and SE, actually).

...you probably wont like any of these reasons, but I doubt that tomestones or another form of weekly currency are going anywhere - they're needed to put a certain hold on your progression after all.

And you CAN do the grind as many times as you want - by creating alts...

Personally I kinda like the weekly cap - it gives me a sense of "Okay, I'm done with this for the week" and I realise that it sounds weird talking about a game that you enjoy with words like "I'm done with this for the week", but it gives me a certain sense of having "achieved" something (on a very, very low bar, of course - not a real achievment, more this feeling of being done with something and being able to look at your workproduct, thinking "I did a good job on this!"). I wouldnt want an open end grind, thats even more boring and something you tend to put off more - being limited it feels more meanigful to actually earn those tomestones.