We now need centralised Angelshares? Have you decided on a later date for 'Godshares' yet...
Mastercoin really got a terrible reputation after their centralised issuance. Now you're going to do it too & worse, you're doing it after you already went the route of PTS funding first! Now I've seen it all!
To be constructive though, despite the hiccup at the start, people probably feel that Protoshares have been issued in a fairly decentralised way. You would probably be able to decrease the stated Bitshare issuance thereby increasing the value of Protoshares as long as you only made such a huge market moving move ONCE.
(Obviously you could just purchase PTS before the announcement and get more than enough funding that way and as sickening as this move might be in terms of insider trading. It will probably be infinitely better for your reputation than trying to issue Angelshares after having initiated Protoshares. (Whether or not PTS is unaffected or benefits.)
In terms of trying to launch. Another group could just steal your Bitshares platform and start it in a fairer, more transparent and decentralised way and potentially receive massive support from the crypto community that may shun you for going about funding in the way you are suggesting right now.
(Also part of the point of mining is that the shares are issued in a fair, decentralized way, based on maths not human/centralized estimation of value - ie. as in the form of development bounties. Also the miners then bring those shares to the market in a fair decentralised way so that investors feel they are more likely to be paying fair market value not an inflated Quark price because of hoarding/other price manipulation schemes.)