Uniswap has announced the rollout of version 2 (v2) across several major chains, including Polygon, Arbitrum, Base, Optimism, Avalanche, and Binance Smart Chain. This expansion enables the community to boost liquidity, create pools, and conduct swaps on their preferred chains using their favorite tokens through the Uniswap interface.

The introduction of v2 on major chains elevates its prominence to a level comparable to that of v3, which is known for its innovative features. The simplicity of v2 may appeal to users who lack technical expertise or prefer straightforward operations.

Both v2 and v3 coexist, offering greater flexibility to users. While v3 is geared towards more active liquidity providers (LPs), v2 covers a broader pool range by default, requiring less active management from LPs.

Savings on swaps include reduced gas fees and minimal Miner Extractable Value (MEV). Uniswap has reported significant gas savings, with actual costs often amounting to less than a dollar, a stark difference compared to the average $35 fee for Ethereum-based swaps.

Sequencers play a vital role in reducing MEV on layer 2, benefiting users trading longtail assets, which are more susceptible to MEV losses. Uniswap leverages v2 capabilities to reduce costs.

Users can access v2 on major chains through the Uniswap Interface, which simplifies the process of selecting networks and tokens to find the most cost-effective swap.

V2 also enhances gas efficiency for deploying new pools, with this feature enabled by default, unlike v3 where it's an optional parameter for optimizing capital efficiency.

Security measures have been bolstered to prevent fund drainage due to exploits and bugs, with swaps on the Uniswap interface secured by official v2 contracts.

Overall, the addition of v2 on major chains through the Uniswap Interface is welcomed by the community, offering simplicity in pool creation, liquidity provision, and swap functions, while prioritizing security against exploits and bugs.