Account rent for new tokens incurs a cost that is partially reclaimable (when later closing that token account), but it's hard to tell if a transaction is trustworthy when those fees aren't called out explicitly. Sometimes I get a transaction to approve and there's a surprise SOL fee (separate from the network fee which remains low). This is concerning because it's a vector for scammers to operate in, where users may not understand what portion of the SOL is for rent and what portion is just taken by the contract call.

Making a separate callout for token account rent would be a huge step forward in making SOL transactions more understandable for the masses. Phantom could even have a tooltip explaining rent costs (and potential recovery amounts) to educate users further.

For example, a recent "airdrop" claim tx I had was trying to take 0.01399 SOL (several $) for a claim of maybe $0.20 of tokens. I'm not certain if this is an unfortunate situation of rent costs being high or if the site was a scam. It would be nice to know so I can appropriately communicate with others.