If you were building a new dApp in consumer web3, how would you choose which chain/L2 to build on to optimize for product growth?

Seems like the two major factors are adoption and gas fees.

cma.xyz. Founder /paragraph, ceo /mirror, previously at Google & Coinbase 

was debating between polygon or mainnet for unlonelyNFCs. visibility is big for NFCs though and polygon gets less visibility on wallet dapps(usually an extra button or side tab you need to click to view them). however, we’ve also prob spent >$500 on gas fees minting them to main so that’s a factor as well. not sure

I'm having similar thoughts. We chose Polygon for a previous Paragraph feature, but many folks complained about lack of visibility. We're working on a new feature and I'm leaning eth now

can you elaborate more on this? what was lack of visibility, and what is new solution?

Cofounder, Managing Partner @ Multicoin Capital

Polygon NFTs aren't displayed everywhere - for example, Farcaster only displays Ethereum NFTs. We've had folks complain that Paragraph-minted Polygon NFTs aren't visible in apps they use which leads to poor UX. 

Ethereum ERC721s are supported everywhere so that would solve for visibility.