Yes I support ZIP 68 and ZIP 112 for a future upgrade after NU7. Clarifying ZIP 203 is just a spec bugfix, so yes I support that as well.
(@strahncryptography: we fundamentally disagree on funding, but I don’t know why you would think that would affect my position on a completely unrelated protocol issue. 
)
However, yes, it is a major point of concern that Zcash uses Consensus Branch IDs that MIGHT invalidate transactions across network upgrades.
I do not support a change to the invalidation of transactions across network upgrades; that’s a required safety feature.