Something with many engagements, say something like a 36 engagement hub like Dabomb, Funn to Chris King (72 engagement) or Hope (100+ engagement). Chris King differs by having 72 engagement points compared to the usual pawl design meaning it could handle more torque. As you improve you will give more stress in the pawls in one pedal kick as you make your gapping distance farther.
You can also go front freewheel setup which is a lot cheaper but less reliable.
Always remember that you are unique. Just like everybody else.
That is one perspective, but then you could look at it another way: Do-it-all bike means I-can-afford-only-one-bike-but-I-dont-want-to-limit-myself-to-one-type-of-riding.
true true, anyway what is important is you enjoy what your doing.
BUT: What I said is more inclined to benefit progression...
ie I have a trials bike..with a seat, basically its because its tailored for me. I can learn, practice and buy pandesal with it.
If you ride DH you dont want an XC bike/DH bike right? or you don't want a street/DH bike or an XC/DH bike...basically there is no all around bike for people who treat progression seriously.
You don't want a triple chainring, long cage RD if you dirt jump 90% of the year on the same bike right? or the common non use of a kickstand?
Basically we are talking the same stuff, but your only talking of one segment who already knows what of type of riding they want. I'm sure we are hehe
In my case I resist building another bike because I waste precious time riding another style ... I enjoy riding thats it, may it be trials, XC etc as long as im in a bike at the same time I want to improve as well.