Sorry to bring down the mood, but...
Are you kidding me? Clean code, OS3/OS4/MOS compatibility, and a split of bounty funds proportional to individuals' effort involved are "unrealistic terms"? If there's one thing we Amigans are great at, it's wasting resources on duplicate efforts. Is it really so unreasonable to have a single bounty for Mozilla on the Amiga? Even an OS4-only version of AmiZilla is still worth ~$2500.
$2500? What if the new bounty they set up ends up having more than $2500 in it? (If I'm understanding you correctly, meaning thats the max they'd get under the AmiZilla bounty). See what I'm getting at?
As a good gesture, AmiZilla should transfer $2500 to the new bounty for this browser.