That’s what you get for finally having done something. 
Admittedly, the exchange rate is not very impressive, although there is some rationale to it: as I said previously, the exchange system should complement the intended farming method, not replace it, in order to incentivise doing diverse bounties.
On the other hand, provided renown can be used in the future, getting those excess coins — especially legendary ones from heroic versions (speaking of which, another possible reason to do these) — from bounties is no longer that frustrating in terms of rewards. We’ll see what they actually implement… hopefully…
Here you go again with this. In fact, I say, ‘Mercstone’ isn’t even that great for ‘whaling’, with diminishing returns for opening packs, as discussed many times, and limited cosmetic offers — in fact, they could have done more: instead of strange ‘coins purses’ (yep, the ones that become excessive eventually) or arbitrary bundles, they could have offered more diamond bundles or such, perhaps in a personalised way, to those who would like to spend on some shinies — why not?
As for thought — I’d say this game mode lacks resources allotted to it, not thought put into its design.
Mathematically speaking, something is infinitely better than nothing if you take the ratio , so this is actually quite accurate.
However, I wouldn’t be surprised if a certain group of forum participants would continue this kind of angry posting, no matter what the developers do. It’s like certain ‘poor’, ‘oppressed’ and ‘downtrodden’: you give them alms, they retort angrily, ‘So little?’, and start cussing at you. 
PS Yeah, below is another prime example. 
What do you mean?
The tricky part usually comes after tasks are done.
How about my 400k+?
(Updated, some parts added)