i like raw power(stats) play of certain mage's and flashy play doesnt always = fun @Riot
One of the issues that we've struggled with in a lot of mid-range mages is that many of them essentially brute force their way to victory through raw numbers. They also don't have a ton of ways to opt into more flexible or flashy combat patterns with their core itemization.
^this is a quote from [Planned - 6.9] Mana x MP/5 x AP x MR Item Pass [Updated - 4/11/2016] by Xypherous on PBE boards
ok brute force there way to victory through raw numbers personally that was my favorite thing about mages as a top lane/assassin main
i loved playing "brute mages"
(kinda) stack Huge ap and just explode everything
and that playstyle was fun huge damage low mobility... you use your mobility to out play my oneshot ability while i try to hit you with my oneshot power during your mobility, it was a fun trade off(except for fizz untargetable, I hate Fizz >.<)
more so brute mages dont need mobility they need a way to withstand op ad itemization(armor)
now WHY DOES EVERYTHING HAVE TO BE FLASHY ok flashy play is fun i have 230k mastery on Yasuo for that reason, he is a super fun champion, but shit mobility is just getting annoying because it's everything to you guys now mobility is fun when its something unique to mobile assassins (ap or ad)
(again shark and un-targetable is stupid imo)
...but apparently every champion needs mobility and flashy play now like i have literally no interest in mobile 
If you ask me League of mobility is no better than League of cleavers...but then again league of cleavers wasn't good for esports...because you know esports > regular player base
TL;DR:(read the 2 lines above and this ->) Brute mages like
&
are fun and dont need extra mobility rather a way to withstand op ad itemization