Can't mages have more fun with builds?

Just pure damage. Nothing else pretty much. If you happen to be a DOT mage a optional Liandries. I'm complaining not because of my build is underpowered compared to the new AD items. It is unfun and CREATES unfun into the game. There are some major problems.
-
Voidstaff. What makes this a "prime" build is that there is no other option for mages to actually get their damage through tanks aside from %pen from void staff so it is ALWAYS a must build. BUT it also gives mages the ability to burst carries harder which makes it THE most overpowered item in this build. Make a item DEDICATED to tank busting. (Like a balanced version of DFG that marks a target with a bonus MR shred debuff.)
-
The mage start core item is overloaded to the extreme. It gives you mana, it gives you cooldown, it gives you kiting potential AND burst??? Weren't these elements of stats separated around season 4-5? Why is it slapped on one item, and buying it makes you a fully armed and operational battle station? Just separate the stats, and add new invented unique effects!
-
Cooldown standards are EXTREMELY lower compared to the primetime of league. 40% is the norm. Midlane duels are now officially URF. Waveclearing champions can permanently waveclear and poke champs can spam without the fear of missing. League around season 4-5 had cooldowns that were commonly 20%. Now you can nuke a enemy midlaner after like 20 seconds he is back in lane over and over. There is no playing around this. if one wins a kill over the other, it quickly devolves into a arms race of which one can spam their ult. (God forbid if Syndra ever becomes viable with this system. Oh wait. it already happened in 2017 where she did this for half a year and everyone caught ebola with that death toll. Now she is now balanced around 47% winrate in plat. Damn)