Yeah . silly me
In many ways, I agree. with some skepticism to be honest. A few ideas:
1. The key obstacle here is to convince major DAW makers to commit to the new format from the get go. Otherwise, it'd go mild like LV2 did.
2. I think a new format better work with VSTGUI. (VSTGUI has a different more open license than VST). This would ease porting existing plugin code to. If I'm not mistaken many devs use VSTGUI.
3. It should at least "try" to make porting code from VST2 easy.
Just thinking loud here. Probably obvious talk.