Hi, I'm sorry you don't like the limitation :( this is for short thoughts you want to share, not really huge conversations, there are better places for that IMO.
well, you may consider rewarding known quality users with an extended limit, say double. the others can pay ;)
The character limit is, in my opinion, the primary reason Twitter became so bad. It encourages absolute language (qualifiers take up characters!) It discourages any level of nuance.
I use Mastodon which has a 500 limit, and even that sometimes is not enough.