Kassadin "buffs" that really should be considered in this meta

Personally, unless some items that primarily focuses on get some buff to defense or damage, I honestly think that Kassadin should receive some minor or even moderate buffs to his general stats, Void stone, and Riftwalk's range.

His abilities are almost perfect where there are (though I would argue that W should receive a lower CD and his E should have a longer duration slow and require 7 or even 8 stacks instead of 6) but his base stats are generally "weak" compared to how they should be. He has fallen behind in the meta despite the recent buff to his Riftwalk, which kept him from being completely worthless.

I've been primarily focused on suggesting changes to Kassadin's kit on this forum and I would still like to emphasize some more on the changes that seem like they would be necessary to put Kassadin in a comfortable position:

General Stats Health Per Level: Increased to +84 from +78 (this is probably the biggest buff on this post and i feel it necessary that Kassadin receives an HP boost for late game as his small amount of defense has been butchered due to RoA's change)

Base Armor: Increased to 26 from 23 Armor per level: Decreased to +2.95 from +3.2 (Kassadin has a relatively weak early and mid game despite the potential to get ahead. He needs some sort of increase to his early defense against enemy auto attacks/AD assassin, but it should mellow out into a similar level 18 Armor)

Attack damage per level: Decreased to +3.3 from +3.9 (I personally feel as though, if his defenses are going to be increased, he needs to lose a slither of his damage with sheen items late game... We don't want a Season 3 issue where Kassadin is TOO well rounded)

Base attack speed: Increased to .655 from .640 (This change will widen Kassadin's potential build paths so that he can choose to use a bruiser based AP build, or even an on-hit AP build and actually be effective with it, though I honestly don't see this as a necessary change--just an option)

Abilities

Passive: Void Stone Kassadin draws power from the void, nullifying 15% magic damage and perpetually capable of moving through units Bonus Effect: Kassadin's power grows, granting him 4/6/8% bonus nullification towards magic damage and a .5/1/1.5 duration increase on Null Sphere's spell shield (Levels 6/11/15) (Meaning 23% Magic mitigation and 3 second duration on spell shield)

(I've given thought about this, and I personally see that Kassadin should heavily focus his passive when defending against magic damage dealers. I originally wanted Kassadin to receive his MR per level back, but with this, it gives the enemy the option to build flat Magic Pen items in order to get through Kassadin's Magic resistance, but at the same time, prevent Kassadin from being completely obliterated by someone like Brand when he is supposed to be especially tanky against mages)

R: Riftwalk Range: Increased to 500/550/600 from 500 Mana Cost: Increased to 60|120|240|480|960 from 50|100|200|400|800 Cooldown: Increased to 5.5/4/2.5 from 6/4/2 seconds

(Let's face it, this is a difficult ability to actually "balance"... the original 700 unit range was clearly too much to cope with. Enemies could not escape from the old Kassadin, nor could they catch him because he would leap out of range of most abilities with a single riftwalk; however, the decrease to his range on riftwalk seemed to be unnecessarily larger than it should have been. A 500 range was fine towards the start of the season, but with the introduction of the juggernaut changes and Deadman's plate, Kassadin is extremely easy to capture for the likes of Skarner, Darius and Garen...

Although, Kassadin's Riftwalk posed a serious problem BECAUSE of its early game being 700 range. No one who laned against him could actually compete with him. I suggest that his Riftwalk have the regular 500 unit range at level 6, 550 at level 11, and 600 at level 16. This will ensure that he is not OVERBEARING early game but also not seemingly sluggish late game.)

This about covers what I feel should be changed about Kassadin. His abilities only need some minor buffs to them that scale into late game, and his base stats need an increase to early AND late game defenses. Kassadin does not really need more than this extremely minor rework/buff to get back to a comfortable spot in the meta and I genuinely think that Riot should take a look and consider such changes to him.