The Morde rework has potential to go solo lanes but it is all hindered by his abyssal MS and overall more squishiness when it comes to the early game so here's some suggestions in order to find a middle ground between the design team and the old and new Morde users:
Right now he is this big guy that deals titanic damage but can't freely do so till like 20 minutes into the game as that's where he gets his artificial stat boosters in order to feel a little more functional.
People are really mistaken if they think being able to self cast his new W will save his solo laning. It will take more than that. If we were talking about the old W then yeah it would really make a BIG difference but unfortunately that's no the case.
For starters, I honestly think his most brutal nerf was the MS, even more than losing the ability to self cast his W. If you compare his MS with champions with the same as let say, Gnar or Anivia. You can easily see their kits really are there to make it up for it. Anivia is ranged, has lots of great CC in her kit and a wall that can easily get anybody else killed if they don't have flash, or save herself for that matter. Gnar is ranged, has lots of CC, an escape and a ranged skillshot slow. I would understand why lowering the MS of such champions. But with Morde this is pretty much overkill in my opinion. The guy is MELEE, lacks any form of CC, gapcloser or anything to make up the loss of mobility without mentioning he kills himself by casting, I completely understand this is like this because his Q now deals titanic damage, but lets face it, he can't apply that at will due to the aforementioned nerf. So it pretty much makes him support-reliant and a very inconsistent yet situational champion by himself.
He is now designed to be fully used in close quarter combat but his shield decays really fast and is a non factor early in the game. He feels like he is forced to go in without the right tools.
His balancing would consist on his MS, his Q overall and how W would work while self casted.
Suggestion #1: Trade Movement Speed over Q scaling and damage.
I personally value being able to move freely than having massive damage. So I would take a large amount of his Q's scaling in order to see his MS restored to 340.
Suggestion #2: Leave Morde as slow as he is but Tweak his shield regeneration on his Q
Leave his MS at 325 but make it that each hit of his Q fill his shield for a fixed amount. Something like 1st - 10%, 2nd-25% and third 35%. I think it is much but considering how fast his shield now decays this will at least give him chance to survive his brutal early game when solo. Mind you, I only suggest this if he is still not able to self cast W in solo lane.
Suggestion #3: Give the 3rd Q hit a Knockup but increase it's cooldown
If we look closely to that hit, we can see it is his Critical Strike animation and hence he is hitting mega hard. The animation is a slamming blow that would make a Knockup CC ideal considering it would fit the effect pretty well. Again, only this if he can't still self cast W while solo.
Suggestion #4: Allow him to self cast W but with damages and effect significantly reduced
Allow him to do so but with something like 50% less effective during solo and 100% when used as originally intended (Conjunction of an ally). Also change the part where he heals to just regenerate that exact percentage of damage as shield instead when solo.
The range nerfs to his E and R are totally livable but if you are designing the champion to be more close combat oriented than ever then at least give him the right tools to help him do so.
I liked his old Q because if was an excellent ranged harass tool and could be used very strategically with the ricocheting shards, and it was simple and practical. His old W would have fitted better in this version because it makes him tankier like juggernauts should be. I feel like this rework could have been done better with some stuff from old Morde and some from the new one. I personally would have liked his old Q and W, with the current E and R (Without Dragon) and the movement speed nerf, but he would have been overall better and less painful that way regardless of the ms nerf. This version indeed has potential but it feel it was implemented the wrong way. I'm willing to give it balancing/tweak chances in the upcoming months. If it's certainty staying towards this new direction then I'll accept this champion is no longer for me and will quit him.
If we could see a matchup between the Old Morde vs the New One, you know for a fact the old is superior by almost everything. It is simply hard to love a champion who was intentionally crippled in order to serve a new direction when the older version was practically better and more practical.
This is just my grain of sand and hopefully someone give it at least a try into consideration. I would be more than happy to still be able use my champion in the role he was originally meant to be. Even if he is weaker. As long as he not intentionally crippled.
Thanks for reading.