Yes and no. Ultimately every 2D game is limited by the artist, in this case DC, who is already drawing full time. Adding more people in other positions may (greatly) improve the process and refine the game, but it won't speed up the development as a whole.
In other words, if DC needs another 3 years to draw the art for the game, the game will be done in 3 years plus the time it takes to prepare the final release and it won't matter whether they hire more coders, posers or so.
Hiring more artists on the other hand is a completely different matter and would require DC to change his own role from being the one who is drawing his game to being the one who mainly supervises/instructs other artists. And that's a step no 2D weg here has really managed until now. It looks like DC doesn't want to take it and for example Magicnuts/Chestnut seem at least sceptical about it, too.
It's the old saw they teach in Business school: If it takes a woman nine months to have a child, hiring eight more women won't get the job done in a month.
That would make sense if the bottleneck was in the art department, but it's not. Just look at the current tracker, art is ahead of everything else by a large margin, at 80% complete, on the other hand coding is the progress bar that's dragging behind, at 43%. This isn't an issue of DC not being able keeping up with the art output, the problem lies in not having a full time coder.