Here's my current thoughts on match-ups from hardest to easiest.
Sadira (Hard)- Is still a problem and will always be from the looks of it unless something revolutionary comes for glacius to deal with her air game. None of your options are really guaranteed as an anti air/pressure escape and it feels like you have to take risks and use a lot of shadow counters to succeed. She has a lot more opportunities to start combos and that is what this game is about, cross ups into double cross ups into web into cross ups into 10% guaranteed grabs is a big problem (and let's not talk about her instinct), no forward dash/backdash her jumps is trouble some and floaty jump seems to put Glacius at even a more disadvantage. I manage to go even with a lot of of good Sadiras but that's more because they don't exploit Glacius weakness rather than because it is a fair match-up. I will not learn a new character for her yet because I really want to Master Glacius before anything and I'll be co-maining Fulgore when he's released (and give Spinal a try).
Thunder (Tough) - I remember a guy saying this was a 10-0 match-up for Glacius, oh how wrong he was. Let's be honest if there is an unblockable it's his shadow grab. If your ass is not attacking or jumping you are not getting out of it, and with all of Thunder's frame traps and Glacius negative strings why would you even be on the offense up close. Summon a hail? grab. Coulder Charge? Shadow Grab, Frame traps into grabs. Just jump back? Get uppercut into a maybe stomp maybe cross up stomp. His uppercut is so good and has so much range it even beats out your Forward MP from it's optimal range. Good luck if you're knocked down and try to guess if you'll be uppercut or grabbed or attacked this time. The only saving grace for this MU right now is that only Rico plays the MU right, but once other thunders catch-up this might get as bad as Sadira.
Jago (Even) - Can't say I've had sets with the best Jagos yet but I've played some good ones, but this seems like his most fair match-up Jago has some good offense that is countered by puddle punch, puddle punch is countered by a neutral jump unless delayed, neutral jump is countered by Glacius anti air ice pick whatever it is. Hadouken can be countered with a hail, Glacius can't fully zone because of his fireball and his jumps are not safe at medium distance because of his upper cut. Shatter can catch his Wind kick if timed correctly and puddle punch might be able to counter his wind kick I need to test this more. He's tough with instinct and has best chance on knock down. His throws are also something to be aware of since he can combo off of them also.
Glacius (Even) - Life lead gives you the advantage, game of full screen mind games with counter breakers/combos. All about risks and reads and mirror match-up experience.
Sabrewulf (Even to Easier) - This is one of Glacius more enjoyable match-ups because he can use his strong attributes to his potential, with no real mid-long range threat glacius may feel free to use shatters and hails as offense/defense to his advantage, doing his best to keep the wulf away with the threat of attacking sabrewulf at any time. However it's not fully one-sided as Sabrewulf is a great threat up close with mix ups/resets/cross ups double cross up, jumps and big damage. Right now I feel like this is an easier match-up that will grow even as time goes on.
Orchid (Even to Easier) - Like with Sabrewulf, Orchid is no real threat from mid-full screen unless she has her instinct activated, her slide kick easily punishable full screen, if she's not jumping she'll get caught by shatter, if she's jumping she'll get caught by a hail or your long range kicks, she has to try and stay close, but her rushdown is not as good as Sabrewulfs, She has that low overhead mix up, but her overhead is two-hits and can easily be shadow countered, she has also some of the easiest to tell mediums/heavys auto doubles and breakable linkers she has to take risks counter breaking if they don't use manuals. However nothing is set in stone yet as tech breaks through this will probably end up even also.
Right now though Glacius feels pretty balanced with no real easy match-ups but more towards the even side, Glacius lack of dash and weak up close game sure does make up for his long range attributes, however with the right mind game and life lead he's still tough to beat on his even and easier match-ups, because with his instinct the roles change and he can achieve what he could not before, specially with the life lead it's a great chance to get a bigger lead or make that comeback he needs.
For those who don't know me, I'm a main Glacius player (fully dedicated, no time invested in other characters.) I'm currently rank 15 Natural, and only strive to play the best players KI has to offer, I seek them out, I challenge anyone and take any challenge whether I get bodied or not and try my best to learn from my losses, My gamertag is Kinetic Orochi, feel free to add me, ask me questions, discuss match-ups or play me anytime, I'm a fan of playing sets with players in exhibition matches.
You'd probably level me up more than I would you, but I don't mind the ass whippings. 
