I think you are wrong.
With a trusted new CEO, like gmaxwell or antonopoulos MtGox would be far more worth than just 300m.
It would be the easiest way for investors to get hold of a major exchange with high enough volume.
I agree. But I am more conservative, thinking there are only less than 30 people in the world who has the reputation to buy MtGox and keep it running.
My speculation: This personage should bid with $1, Mark is too greedy to agree, the deadlock goes on for a month, and this personage decide the brand's reputation is further damaged beyond redemption and give up bidding, Mark capitulate and agree to sell for $1, but it's too late, then he files bankruptcy.
Karpeles has no choice, there will be too much pressure on him from people having serious funds in Gox. They will soon see as well that this is a reasonable solution to possibly get their funds out.
Whatever business Karpeles touches from this day, will turn to dirt. He adds negative value to a business.
Maybe they will have to put some money in to get this parasite out once and for all, he doesn't deserve, but sometimes you have to dance with the devil to get to something better.
At the same time, there are many early BTC adopters which have immense amounts of bitcoins they were honorable enough to keep instead of flooding the market and crash the price.
They would love to invest their BTC in a business that would on top restore BTC's reputation and give their remaining coins more value in the process i would guess. Also with a very good chance of profiting from it in the next 5 years unless something more sinister happens in the BTC world.
They will also see very quickly that this can be done only with a new fully trusted CEO by the community which will be given full control of how the exchange runs without strings attached.
I named two candidates which would be perfect in my opinion, however i have no clue if they are even interested.
There are certainly more issues as in how feasible this is in terms of legal issues. I am no lawyer, and i do not have all the data related to gox.
This is just my take on what i would consider perfect both for the new investors and those having funds stuck in the exchange.
Personally i have nothing in MtGox and drew out all i had long ago when they started delaying withdrawals, but i won't hide that it is in my interest for BTC to thrive as i am holding a medium sized amount of BTC as well as me considering BTC a great way to escape the quantitative easing (money printing) of the FED and the likes.