A definite no for me. Although, I wouldn't want to see a 4" screen either. I'm sorry but those htc's are jus waaay to huge. The way it is now is jus perfect.
I used to think my phone was huge, and it is, but I guess its fine for me because I don't wear tight jeans. I choose it because ATT wanted a huge depoist fee and I did not want a blackberry. I had battery issues with Motorola batteries. i'm used to the EVO now and It will take a lot for me to downgrade to a smaller screen. I've been to Best Buy, I've played with the iPhone. I played with it after I bought my EVO and yes the screen is sharper, but its so small now. Plus I like that i have 4G. It may not be true 4G, but its still "4G" and its in development, but hey, I can have faster data speeds NOW, not in 2020.
I think the real reason the EVO weighs a little more is because of the kick stand. I can flip it open and hold the phone and it fells a little lighter.
But lets say the 3.5" becomes the "iPhone nano" and the larger one would be the main phone. You would have a choice and theres nothing wrong with choices. Its not like Apple will have ten different models