Nothing is wrong. One small adjustment: abolishing the draw offer could be tested (like Sofia rule)
Chess is rich after all.
Chess is not that rich. I'm sure most 1800+ players know 95% of what they need to know in chess. If they made less tactical mistakes then they can be titled players maybe even GM. The difference between a GM and an 1800 is that a GM plays the best moves more consistently and they make less tactical blunders. The 5% of knowledge is situational positional and endgame stuff.
More of..."Chess needs to be changed..."
A game that hasn't been solved, man hasn't mastered, is still full of positions that have never been reached, ideas that haven't been tried....and yet...it needs to be "changed"