Great job. I've been trying to do this myself but other posts refer to old touchwiz (seclauncher) and the new MagazineLauncher seems different.
Does this also affect the home page grid size? Because I'd also like to reduce icon and text size on home page.
*Update: I'm not able to get this to work on t325 with deodexed rom (Pro Plus v1). Tried flashing and replacing Magazinelauncher manually then wiping dalvik. But tablet would not boot, just says "Optimising apps", then "Starting apps" and gets stuck.
I haven't tried it on stock though.