No changes are needed to botlane, but to the game itself
If the towers are largely buffed, the baron nerfs reverted and some stuff is done to limit snowballing and objective taking ; the games will automatically feel better and the crit adc's will even naturally come back to viability, due to games lasting longer and their lategame still being huge.
Win-win, they're still weak early but become lategame powerhouses, and the meta becomes less of an earlygame snowball shitstorm.
The main problem right now is just games ending too fast. Bringing back adc's to early powerspikes is NOT the solution. The solution is to reduce the snowballing and weak turrets