I think we need to wait a bit longer before we can really complain about the unobtainability of the ring. There are more events coming up that will reward V coins (according to the in-game event calendar), perhaps those will be more generous. Besides, there should still be some difficulty to obtain the ring in my opinion. Nexon might as well place a fully upgraded ring in everyone's inventory if the box drop rate and V coin obtain rate would have stayed the same as it was yesterday. I like the sense of accomplishment that comes with working for a reward, so getting the ring shouldn't be too easy. Further lowering the drop rate of the boxes, but removing the V coin limit would be a good solution in my opinion.
Other than that I suppose I agree with your letter. Nexon has been incredibly focused on emptying their players' pockets, over the years and it makes me think very poorly of the company. The game itself is a great deal of fun, however. I really wish for Nexon to stop looking at Maplestory as a money-making machine and start caring more about the game and their player base. Yet past experience makes me feel that that's too much to ask.