Diamond Vel'koz main with thoughts about his changes
I've mained Vel'koz mid since his release and just have a few thoughts about his current state in the game.
1: Vel'koz is not overpowered 2:he has a distinct playstyle operating around trading with his passive stacks 3: due to low mobility and ult channeling is an extremely niche pick that really suffers against dive comps
in my opinion from the rediculous amount of games I've played on vel'koz is this:
his passive immediately rewards you for landing 3 hit combos with extreme damage spikes (coupled with thunderlords you can evenly trade or outrade most meta picks in the early laning phase) unfortunately this also makes his damage extremely inconsistent against higher level players.
the inconsistency in his damage output was reduced, along with most poke mages, by the introduction of frost queens to mid lane but due to the nature of his ult was still in a healthy spot to allow team to strategize against him. (basic rule of thumb for vel is you gapclose to him hes more than likely not ulting or he's dying based on enemy cooldown availability.)
so how do we alter him to allow him to fit a niche while still keeping his healthy play style?
Passive: Organic Deconstruction; current state: damage buff; not very unique
lets first of all look at the definition of Deconstruct to learn and develop a better theme and direction to move in
de·con·struct verb to analyze (a text or a linguistic or conceptual system) by deconstruction, typically in order to expose its hidden internal assumptions and contradictions and subvert its apparent significance or unity.
reduce (something) to its constituent parts in order to reinterpret it.
basically my thoughts are this; his spells in their current state act as a analysis of the target(s): which fits with the stacking identity of passive so no problems there. however the payback of reaching full stacks only heavily damages your opponent. it does not allow you to "learn" anything about your opponent in game. which to me is the most unique part of vel'koz's personality (or lack thereof).
possible changes that come to mid would be placing a decision making tool into the hands of vel'koz players rewarding them for learning about their opponent. I'm no champion dev so please bear with me here.
maybe allow spell interactions after reaching full passive stacks? (extra slow?, enhanced range?, longer knockup time? magic resist debuff? cdr?) or possible champion style related interactions? (assasins get reduced damage output against you for a time?, increased mobility against poke mages?) not sure if this is even in the realm of coding possibility however.
Last thoughts. vel'koz is an poke/sustained damage mage who is reliant on team comps, levels for base dmg in passive, magic penetration, and cooldown reduction. often times you can fall behind in lane but due to the fact that your damage output is only reliant on sorc shoes and haunting guise, makes him almost relevant in every game as long as he can stay safe and stay up in levels.
I'm very much looking forward to seeing what you can do with this champion and hope that you can still maintain his healthy kit.
forever EYE,
IGN: Deconstruct 
- it's kind of expected that she lands most of her spells because her CDs are so long, so if she falls behind she doesn't have the same fall-back cushion of extraneous damage that VK has which means she won't be effective in fights and it's going to be really hard for her to properly waveclear.