• 4 GB uploads, faster downloads: I'm struggling to imagine what these would be useful for, other than movie piracy. The default upload limit is already 2 GB, and the download speed is fine.
• Doubled limits: Most of these are client-side limits. Locking these features down behind a paywall is just obnoxious.
• Voice-to-text: I have never intentionally used Telegram's voice messaging features. Most mobile phones can already do speech-to-text; making other people use a premium feature to get the same results is silly.
• Unique stickers, unique reactions: Oh please god no. Animated stickers were bad enough. I'm going to be tempted to ban anyone using these in the groups I moderate.
• Chat management: More paywalled client-side features. (Including one feature that was previously available to all users -- auto-archive for new chats used to be offered to any user that was getting a lot of chat requests.)
• Animated profile pictures: See "unique stickers".
• Premium badges, premium app icons: Yawn.
• No ads: Where do ads even show up? I've never seen one, even in large channels.