Thanks for sharing these thoughts... But I kinda lost you about the plug ins...
You mean monitoring using plug ins, then having the ability to change them later?
You're going to have to elaborate on specifically which part of the post you're referring to :
If it's that final paragraph, I was simply talking about ending up with individual tracks that reflect what would have been recorded, had it been tracked through hardware - for archival / remix purposes (rather than recorded clean, and subsequently manufactured using plug-ins).
In quite a short time, you get incompatibilities between software versions, operating systems, plug-in versions, formats, product support, and the continued survival of 3rd party companies.
Your chances of opening a software session, recorded entirely clean, and having it sound anything like the last time it was opened 5 years ago, are slim - you could be looking at starting from scratch.
It's kind of a miracle that I can open 25 year old Pro Tools sessions, but their commitment to backwards compatibility is one of the key reasons they became, and remain an industry standard (and why software progress happens at a glacial rate).
That doesn't change the fact that some of their own plug-ins have fallen by the way side, and many 3rd party products cease to exist, or have been updated in ways that don't allow for recall - so there's still some element of recreating elements from scratch.
The need for keeping future proofing in mind, shouldn't dictate how you track, or mix the project, but it can streamline the work flow, and make additional delivery requirements (Stems, M+E, stereo / multi-channel mixes, flattened tracks etc) much simpler.