Tail emissions is the least of it. They enable variable block size so you can do bank runs on custodians. 

Don't get me wrong, I'm not here to shill monero. I'm saying that what Bitcoin needs is going to change as it gains adoption to ensure it continues to freedom money. Maybe being vulnerable to takeover of custodians is the carrot that banks and nation states need to adopt Bitcoin and win the NGU race. Once it absorbs a significant amount of the global capital gains will diminish. It then needs to compete with cheaper, faster, more private coins that have growth potential to take market share off Bitcoin. This is when it will be important that Bitcoin has smart people making improvements to remain dominant and resist capture from banks who can offer economy of scale services but not really offering the real freedom of Bitcoin.  

 Thanks for clarification. 
But bitcoin is scaling in both custodial and not custodial ways with ecash, mints, federations, side chains,  multisigs and so on. 

I don't understand the alleged necessity to change anything in layer 1 nor I see the reason of promoting inflation.  

 ecash/federations don't scale Bitcoin. They scale IOUs. And ironically their inflation is arbitrary and centralized. A mint can print as many tokens as it wants that aren't backed by Bitcoin. 

 Ohh my. 
Have Fun Playing with shitcoins. Godspeed.  

 Your criticisms are that shitcoins are bad because inflation, then say we don't need them because we have these custodial IOUs we can use that mints can arbitrarily and covertly inflate. Makes no sense. 

 ecash tokens are shitcoins. and not a single thing you mentioned is making bitcoin self custody more scalable.