The removed counters cease existing.

Why not move them onto Card130728 rather than remove them?

You can physically put them there, but doesn't count as it. Just this permanent will have to remember how many of each kind of counter had been removed in total, in order that they will be added again. (Maybe the wording could be changed, if the way it is written is unclear.)

The current wording attempts to move conters that have ceased existing onto the permanent, basically failing to do so because of a null pointer.

From what I gather you want a "same number and kind of counters" wording for the second ability.

As another note the second ability is kinda not well placed on an enchantment. The one built-in way of removing this enchantment is via world-rule and that's rather a weak path. This combination of abilities fits better onto a creature.

Considering there is no cost associated with the card the cost associated with the "death" trigger is also interesting. Does the effect inherently justify a cost?

I am considering the counters to be not "things" that can "exist", but a non-persistent one-shot property of each object and each player, where for each object and player, each kind of counter then has the number (normally zero) of that kind of counters and the timestamp of that kind of counters. The way that effects that move counters are working, I think is meaning that it is effectively like that. ("Moving" counters has its own rule, it to fail in some cases, but that doesn't affect this card, which doesn't "move" any counters.) So, I would think that it isn't a null pointer error. (But maybe it isn't supposed to work like that; I don't know.)

The card has a mana cost, just one that I do not know what it is. The first ability has no cost. I don't know if the death trigger effect inherently justifies a cost; maybe the cost should be removed.

I liked to add death triggers to world cards in order to allow them to do one more thing if they are removed due to the world rule, and they can also trigger when they die in other ways too including being destroyed or sacrificed, etc. (However, this probably isn't the only thing that a world card should do, especially if it is not a creature (and it usually isn't a creature), but I think the first ability of this card is good anyways. I wanted to add death triggers to the toher world cards I designed too, but sometimes could not think of something suitable.) (You can also, if you have more than one world card, or something to sacrifice enchantments, etc, to be able to use these death triggers abilities in time by such thing.)