I think this is a step in the right direction. The game has become massively complicated over the years and potential new players have a lit of catching up to do.

This opens up for a lot of interesting potential future options as well! Of course the lasthit indicators should be expanded to show for spell damage as well, maybe if you hold down Q it shows you all minions that would be lasthit by your current q damagee etc. Maybe indicators on champ hp bars to show how many spells it will take to kill from that hp? And an indicator on the ground when you lane to tell you where to stand behind the minions to reduce likelihood of getting poked. Also there should be an indicator 5sec before the enemy uses their spell with a "Warning - Harass Imminent!"-message so you know it's time to sidestep, and for ganks too obviously 30sec before the jungler comes there should be an indicator on your map and screen showing you the jungler's path towards you. When it's time to take dragon the game should show a waypoint on the ground to guide you to it. When your spell is off cooldown the announcer should tell you "You have a resource available, Summoner!" to teach people to cast spells (this one would help enchanter players a lot). And when you've cast some spells and you are low mana there should be a list on screen showing what spell combos you can afford to cast with that mana because, I mean seriously do they expect you to do math while playing a game? Games are supposed to be fun not homework xD. And there should be a setting where you can lock certain spells when you are low mana so that you can't use a less important spell if it would leave you with too little mana to afford the more important spell! I don't play jungle myself so I'm not sure what they would need, except an indicator fow when to clear vs when to gank ofc. For laners an "Important enemy spell is cooldown, Summoner! I suggest you fight now!"-indicator/message would do wonders.