Looking at the Brigil proposal objectively, purely at the site's merits.
It is more central than Kanata however, it could be quite difficult for Ottawan's to cross the river and reach Highway 5 to the arena.
It is served by the Rapibus, and with a bus loop within the site, it could have similar bus service as the current 400 series to the CTC. However, once again, it could be difficult for OC Transpo buses to get to it due to poor interprovincial road connections.
If we were to extend the Trillium Line to Gatineau (main line to Zibi/Chaudière and shuttles to arena/casino during event and game nights), it would help the situation though again, Trillium's capacity might not be able to handle it.
If Gatineau's RapiBus were to cross the PoW to Bayview (or better yet, convert the RapiBus to rail and cross to Bayview, though that won't happen), that could work.
Another recent event could make this site even more interesting. The Louis St-Laurent Building south of the proposed arena (as seen in the provided sketch two posts above) was badly damaged in a fire a few years back and DND will not be returning (see post
here from Rumour Thread). Brigil and Melnyk could buy that property and include it as part of a new entertainment district.
The big questions though are
a. will the NHL allow the Sens to move across the river to Québec.
b. Will the Montreal Canadians accept another team in the Québec market and
c. How does this effect Québec City's chances of getting an NHL team (relocation or expansion).