Many people request different visual tweaks for TOJ. Please understand i don't have time to make customized TOJ version for everybody, instead i provide knowledge and tools to customize it yourself. I made tools that allow you to change whatever you want yourself, so why don't you figure how to change something yourself and publish your mod here for others. Stop being lazy, because it annoys me.
All you need is to extract sje.jhh files with sjejhhtool (it comes with all recent versions of TOP or TOJ english patch), most files are in common formats like .wav or *.png, only exception with .ipl and .spr files. .ipl files contain images used in animation and .spr files controls how aniamation goes. to edit ipl files you can use tool i made SprIplTool (can be downloaded here: http://to-p.tk/tetris/), there is no tool to edit spr files yet, but file structure is simple (check SprIplTool source), so you can write some tool yourself or just use hex editor.
here is mod that removes stars on harddrop effect, requested by few people: http://to-p.tk/tmp/killstars.zip
as you can see i just replaced few images with empty ones, is that really so hard?