So.. A eb13 modem and a ext4 backup running on stock file system...
I predict big problems on the horizon
Everything worked perfectly until I tried to pair Bluetooth. Then she froze. I couldn't get it to fail any other way than with bluetooth. Fun experiment, though. I though I had a backup from before using CWM to convert to EXT4, but that isn't the case. I'm now running EB13 on CWM3 (which converted to EXT4, but no problems in the 12 hours I've given it).
My main reason for starting this Q&A post was to point out that I had tried the ROM and its recommend fixes that I could find in what I consider a reasonable amount of time/searching so that the developer might catch it and look into it if he/she so desired.
I want to note that I don't feel entitled to anyone's hard work other than my own. I'm perfectly happy following all instructions and finding that for me it didn't work. I might get a little miffed if I brick the phone but Samsung has made a product that remains quite resilient after all the modding real developers do, and the torture we tinkerers do. So to k0nane especially, thanks for the hard work. I'll keep reading through the forum and maybe try what Badbeats suggested with Bonsai 4.0 some time next week when I'm not so busy at work.
Seriously, you developers are amazing.