I'm going Spawn only this KL and it's not easy, at least for me.
Been playing V1 only, since I don't enjoy the others like I do V1, it feels more complete in terms of tools, like DB3 and BF3, giving access to the +4 restand and the anti-breakaway. He has solid damage as well, better than V3.
Great usage of B1 feels essential, it's such a good button but gotta use it well. B1 BF3 at max range is hard to punish by some characters and you can AMP it to make is safe. B1 DB1 can be really annoying and it's amazing to chip them out.
S3 is also really good!!! You can punish lots of things with 34 BF2, which combos at max range. 11B2 on block gives you a free 34 after, other option of your choice. S3 will also tag em if they like to jump between your strings. 34 BF3 at max range is hard to punish as well.
DB1 has a pretty good range and it's really annoying to deal with. Do care that it can be punished like you punish Storm Cell from Raiden, block the low and let go of block, because the AMP version is a HIGH.
I thought I was going to miss V2/3 BF1 but after playing more games I don't really miss it anymore. The range of the 1st hit isn't bad at all, it forces you to play at ranges where Spawn excels, in range of F21/F234/34/B1, and once you tag em you can AMP it. It works as a good AA, you can tag Sindel out of her air whip for example.
D1 BACKDASH is a really good tool, you can fish for something from the opponent and punish with a B1/34.
AA is kinda meh, imho, on this variation, so far I've been doing D2 up close or BF1 from afar.
His dive kick ain't bad either!
On this variation I feel you need to work harder and use the DB1 cancels, which I haven't implemented yet, in order to open people up. Once you have the momentum gotta be smart to keep it and make every hit count. Once you have the life lead you can play it lame if you want because you have great tools to hang people up.
In my case I need to work better on punishments, using more BF3 after a launcher to tag breakaways and better usage of F21. Other than that it's just getting matchup knowledge. Btw Cassie is mad annoying...