If dragon and baron got deleted,

yes its called heroes of the storm isntead of buffs or gold there a bot that pushes a lane for u like in heroes

Would be a shit game

Without a objective besides destroying turrets/nexus, there is little reason to team fight. You would take a strong lane clear/push champion, and win games through there.

The idea of this game is that besides laning, there are objectives that make players leave their lanes to try and get. These objectives give you a bonus or advantage. Without them, the game would be BAD. There would be a meta that is REALLY bad and a short in terms of viability

Given time, this could make for an interesting game mode.

Likely, yes.

Top and bot would likely lane swap more often in solo queue, though. But jungle strats would change.

Would probably still have a 1,1,2,J set up for the XP. Jungle would have to focus on either power farming or ganking. Games would be more centered on killing or protecting the ADC.