The problem I think you are trying to solve isn't much of a problem.
I've been developing with CMS applications for 12+ years and have never once ran into any of the issues you described above (failed upgrades, hackings, site-jackings, buggy plugins) to such a degree that I wanted/needed to completely switch the CMS platform.
I'd urge you to NOT build a product for developers. I know it's tempting because the ideas we (developers) come up with follow the 'scratch your itch' advice. I wrote a blog post about this: http://www.travisdoes.com/you-itch-sucks-scratch-somebody-el...
I'd highly recommend you focus your efforts on building a B2B SaaS product. There are millions of great opportunities to build boring, but profitable niche products.
If you need help finding some ideas, shoot me an email.
I've been developing with CMS applications for 12+ years and have never once ran into any of the issues you described above (failed upgrades, hackings, site-jackings, buggy plugins) to such a degree that I wanted/needed to completely switch the CMS platform.
I'd urge you to NOT build a product for developers. I know it's tempting because the ideas we (developers) come up with follow the 'scratch your itch' advice. I wrote a blog post about this: http://www.travisdoes.com/you-itch-sucks-scratch-somebody-el...
I'd highly recommend you focus your efforts on building a B2B SaaS product. There are millions of great opportunities to build boring, but profitable niche products.
If you need help finding some ideas, shoot me an email.