Looks like Masari will be the first Cryptonote coin to gain mobile ledger support.similar to My Ether Wallet, though fully client side (no private keys transferred, etc..) https://twitter.com/xmranon/status/1104032702326628352 - link to the screenshot of the conversation in Discord.2019 has already brought us SECOR / Uncle Mining, now hardware wallet support, and hopefully we'll get more info on the Blocktree Sharding proposal soon.

There are lots of things happening. I don't know where you are getting the notion that the project is dead. In fact, Gnock, Thaer and Cryptochangements have been working on some really exciting things. The Blocktree paper needs to be perfect as well. I imagine it will be heavily scrutinized. Great work requires time and patience friend.