Major weak point is constant L1 and L2 switching required as the user interacts with L1 and L2. So something as simple as transferring some funds to a friend on the L2, from your L1, and also, contributing to both L1 and L2 Liquidity pools, takes 3 to 5 refresh/Metamask set-L1 or set-L2 steps, which is way too many. Design target - user opens wallet and sees all their balances on both L1 and L2. Then, user selects action. If not on correct chain for that specific action, then allow user to move to correct chain for that action with one click, so the chain change and action can be performed in fewer than two clicks on average.