Modular chains, to put it simply, the biggest change for end users is not that the "concept is more advanced," but that the experience feels more like applying patches: if something doesn't work, just replace that part, small fixes and tweaks can get it running. Previously, a single chain handled everything, and if it got stuck, everything was stuck; now, execution, data, and consensus are separated, and you might only notice that "transfers are smoother/cheaper/occasionally more complicated when crossing chains," while everything else is in the background.

I also see clear traces on the chain: the same set of addresses interact on chain A today, then settle on chain B tomorrow, like building with blocks. As for the staking, shared security, and the "yield stacking" system, which has been quite noisy lately, my feeling is that the more patches are added, the more likely it is to develop cracks... Anyway, I care more about whether abnormal transfers and contract permissions have changed, rather than missing out on yields and accumulating risks first. That's all for now.