User blog comment:MeerkatQueen/Thoughts on VOCALOID5/@comment-53539-20190410080552

We're in the modern era of releasing software and then patching later and this has worked with video games, but over time has been slowly creeping into other types of software.

Vocaloid5 isn't alone, while I do recommend V5 over V3 and V4, the issue is more of a long-term effect then anything else. The only functions of importance we lost were Plug-ins and XSY. XSY was worst then the new "Styles" and colours function and does more or less what XSY was intended to do. Plus hardly anyone used XSY for the function it actually was designed for. I would say I could write an entire essay on the issues with XSY... But I already did on Cross-Synthesis.

The XSY function has mostly been used as a toy by us westerners and few know how bad it actually was. Plus, I'll example from the XSY page we have here... "Why are you XSY IA with IA Rocks to make IA better for rock music... When IA Rocks already handled rock music better then IA could ever hope to handle?". You can read Cross-Synthesis and the number off issues people didn't realise existed amounts to far more then the 2 advantages it gave. 1 was to gloss between two voicebanks smoothly and the other was for new vocals. While its nice to turn 10 Megpoid voicebanks into 100, the problem was a lot of those new voicebanks were kinda not worth it. None of the new results were realistic and they lost a lot of quality at times, especially if you XSYed vocals like Cul or Gachapoid. It was nice for random mad vocals, but it didn't ness. produce good results.

Despite my entire notes of how bad it was, I still disagree with its retirement. I have a theory the function was one of those software functions that can't exist because Hideki Kenmochi left. One of the notes about Adobe is over time small features have been removed, this can be tied to one person on the dev team who either had rights to the function or was the only one working on it. When they leave the team either no one is able to program it, or wants to or they take their function with them because they only had rights to it. IF the rights thing was held true, then it cannot return to Vocaloid.

The majority of the Japanese fandom never made use of the function as it could be pretty redundant, as I examples with IA and IA Rocks. It don't see it as a big deal if it stays gone, as it lead to some bad practices, especially XSY hacks that weren't technically allowed. I think the worst part of it is still people who here in the west XSY'ed for the sake of it and thought their results were good or better then the original, the whole "using Vocaloid as a toy". Plus most Vocaloids couldn't use the function and it could hold back single released Vocaloids. So if there was one function that had to go... XSY would be it if I had no choice myself.