after dogecoin fork (dogethereum)
Fork? Its better to call the dogethereum as a decentralized bridge between the Doge and the Ethereum rather than calling it as a new coin. The tps of Doge is being scaled with the smart contracts of Eth and I assume that DogX token is no way associated with the bridge protocol based on the various claims. There has been a dilemma among the minds of doge supporters, that the new DogX Erc20 token is a copy coin. Doge has always been used as a tipping tool of appreciation all over the internet(most commonly seen in reddit). I own a little of 20k doge for fun purposes of gifting some friends on special occasions and for exchanging some low value coins.
Sure, they could have introduced another halving. Is it now set in stone?
Its better to leave Doge uncapped and not introduce halving as Doge is not being considered as an asset. The main goal of the currency is to be used for tipping and paying others in the cheapest way. Constant block rewards are not very common in cryptocoins with exception being Monero and Doge. Once after reaching the threshold supply, 0.3 XMR is constantly issued for each block as an incentive to the miners whereas 10k doge is being issued in Doge blockchain.
I guess the dev team could decide to hard fork in the future to change the issuance model if needed.
The price of doge is so low that it is getting traded at 0.005, with a hard fork you may completely damage the whole price and dump it down to 0.000001