I don't have anything against innovation - provided it's more useful than the inconsistency it introduces. Tools, including software, are used for other ends, they are not ends in themselves except for a few people who specialize in them, or are otherwise particularly interested in them.
Part of the problem is that different people value different things and, consequently, want different things in their tools. This inevitably introduces complexity, both in the variety of tools available and in the tools themselves.
When browsing the internet and blogs, I am interested in finding interesting or useful content, not in learning to manage a dozen different software systems. There are too many different blogging/commenting systems. For someone interested in finding useful or interesting content rather than in "communing", it is seriously annoying to keep track of how they work.
Standardize somewhat on the blogging/commenting systems. Reducing the number of different systems will lessen the complexity a lot more than adding features to one or another would increase it. Reduce the number of systems by making it easier for current sites to transfer to another system. Reduce forking of projects by making it easy to patch systems to a consistent standard.