Rollup-focused roadmaps bring up an interesting dilemma: when you have multiple L2s talking to each other, the trust assumptions get murky fast. Cross-chain security isn't exactly straightforward here.

But here's where things get exciting - there's real room to level up. Think trust-minimized bridges that actually work, intent-based systems that don't require blind faith, and messaging protocols that keep liquidity flowing smoothly between layers. The fragmentation problem? It's solvable, just needs the right infrastructure.