Thread by @matiwinnetou

Question for blockchain experts - but answers to be read by all.

The most modern blockchain architecture is considered:
- Settlement Layer
- Execution Layer
- Data Availability Layer
as separate executable nodes (modular).

Is this a good architecture? After all if we go distributed we trade some problems for other problems (see what microservices did...).

How does Cardano fulfill this vision? It appears to be semi-modular, not completely monolithic but not completely modular.

Cardano is opinionated about eUTxO on L1, this means the only isomorphic execution model can be some form of UTxO [I wonder if @fuellabs_ V2 would be possible] (maybe only eUTxO).

Of course it is possible to have many sidechains, where they take root of trust from Ouroboros.

Root of trust from Ouroboros means - set of stake pool operators, which is trusted by community, this means sidechains can run consensus such as OBFT, iBFT 2.0, etc - super fast because they are in trusted environment.

If SPO is dodgy then on L1 his stakepool's reputation is on the line and delegators will leave him/her. In addition concept of slashing via DAO can be introduced.

Would this be possible to implement account style execution layer 2, where root of trust is not from Ouroboros but for instance from L1 (just like Hydra L1)?

Let's simply, questions:

Part I - technical:
"What features will fully modular blockchain (S, E, DA) architectures have that... Cardano won't have?".

Part II - practical / business:
"Will those missing technical features hinder adoption of users / developers / use cases"?

@epolynya @SebastienGllmt @_KtorZ_ @thepizzaknight_ @jjettisonn @joni_koskimaa @DCdoso @NicoArqueros @ravanave

you as well... @TacticalGrace - BTW, you were right that @fuellabs_ only has payments on v1, v2 will introduce smart contracts on UTxO...