Honestly the liquidity thing is the main benefit I see with ecash, it's pretty great, but I don't think the tradeoffs are worth it. I think there are already better solutions in the works that address the liquidity and on chain footprint concerns that don't bring in a risk of debasement.
I think the ecash crowd, whom I admire greatly, hasn't really understood the full importance of the debasement issue. If there is a chance of debasement, no matter how small, to my mind, it becomes an inevitability. This tradeoff for me is categorically unacceptable under any circumstances regardless of the benefits. It's just too important and too big of a temptation for any person or federation in the long run. The idea is to make Bitcoin the final money, the last one. That means taking into account the next thousand years, not just the next hundred.
I hope the ecash people continue on their path tho. This is an avenue well worth exploring and who knows...
Anyways, loves your post man, thanks