Telegram indeed does have excellent UX, speed and multi-device support.. as all clients are open source, there should be a (convoluted, rocky) way to port them to use the matrix protocol (an idea I've had a couple of months back).. or, instead of one-time porting, insert a protocol bridge running as sidecar in order to be able to keep in sync with upstream TG code (Pavel himself seems to be doing _immense_ amounts of coding on it)..

Anyone up to the challenge?