We need a modern look, ux design and shopping process/experience.
Community Theme Default is several years old. It has flaws, it isn't mobile friendly at all. Don't get me wrong guys, but another face lifting will get just a bit better theme, not a new perspective this project needs. I'm not saying that existing code can't be reused in some way, but for sure shouldn't be used as a base for a new template.
Also there is a need to change a way of expanding theme features. I know that no one is forcing you to use a lot of modules, but currently there is a module for every little thing, with a lot of duplicated data and so on. This, beside removal of useless modules from a theme, can be addressed in favor of using HTML Block, so module bloat will be minimalized.
I don't think that there is a need for mobile and desktop version - more space doesn't mean that you should bloat it with something and a good RWD designed theme will look good on both platforms.
Feature voting - I'm against it. Most of us merchants on this forum are not graphic or ux designers, and you can see it clearly by visiting our shops. Of course users can suggest something, but the final look and feel of theme should be decided by professionals.
There is also need of translations proofreading. Even the best theme shopping experience will be ruined with bad translation, and if the rest of them is as bad as Polish one... I understand how works community translation and I know that it's hard to get quality with multiple people translating something they don't even use. Proofreading will take time, but it will be worth it.
That's my five cents which should explain my point of view on this matter.