Video conversion takes time. In it'd take longer to convert a video stream and play that than it would to run the original clip in veeeery sloooow slideshow fashion. There's also a lot of other "simple" modern standards that'd struggle on any 680x0 cpu (including an overclocked 680x0 which is 10x+ the speed of any '030).
This isnt to say a more modernised browser isnt possible, it just sounds like some people are expecting too much from the good 'ol classics.
My suggestion would be to set up an organised effort, with (realistic) bounty goals clearly defined. The current expectations of a 68k browser with everything and the kitchen sink probably makes it hard for an interested person to take such a thing seriously. A more basic browser supporting CSS and javascript (netsurf isnt bad, but lack of javascript is quite limiting) is way more realistic/reasonable in my opinion.
As for the suggestion theres no coders, etc. remaining...... thats one of the craziest things Ive heard in a while.
Currently "amiga" (os3.x/4.x/mos/aros) coders are writing 3 entirely new oses, along with collectively thousands of pieces of software. OS3.x is still getting work done on it and new ports and software done. Heck, even one of the "NG" options has multiple versions (x86,x86-64,arm,ppc,68k, assorted hosted versions, etc.).
Despite all the bickering and stupidity in this community when I sit back I cant help but be impressed what this community has achieved with so little resources.