Telegram, on the other hand, does not offer its Premium users any better limit in regular messages than 4096 characters already available before Premium. Hence I am afraid that some “digital refugees” that once have come to Telegram in droves (see https://t.me/durov/170 for example) might now be incentivized to leave for Twitter.
And thus what I suggest here is a Premium doubled limit, 2×4096=8192 characters in a Telegram message for Premium users. It is designed as the natural next step that follows the existing Premium doubled limit (2×1024=2048 characters) in Telegram captions.
A workaround is already well-known (“put you longer message on a Telegraph page and ask your channel's subscribers to go there”), but occasionally it feels like an unnecessarily high barrier between the subscribers and the text — and its necessity could be lessened by Telegram Premium.