If you really want to do things the way the DMS4 team planned it, then you are of course free to do so. But the Apps menu of ToxicOS is a very awkward and limited way of handling your elf launching needs, due to the requirement of using new install scripts every time you want to add or change something. And similar limitations apply to the Browser menu, where the only useful abilities are to inspect the content or run elfs, but without any way to copy files/folders that you may need to do.
I have a DMS4proSE myself with ToxicOS installed, but hardly ever use it since I find other freeware solutions to be better for nearly everything. The one exception is that ToxicOS is compatible with a few more games installed to HDD, but for all other games HDLoader 0.8b/0.8c has more to offer, and for elf launching and media browsing I use nothing but uLaunchELF.
In the latter I am obviously partial though

, being one of its developers, but I think most here will agree with me in stating that the Browser of ToxicOS is pure crap compared to the FileBrowser of uLE. The GUI of ToxicOs is perhaps 'prettier', but it can't match the uLE FileBrowser in real usefulness.
And while the user defined elf launch buttons of the uLE menu may seem limited (normally just 11 available per page), there are ways around those limits (up to 14 per page, or multiple menu pages). And with uLE no scripting is ever needed. Just use the built-in configuration menus to change your setup and save the CNF file to MC.
Best regards: dlanor