I hope the engine becomes 64-bit soon
, or at least by the time HTML5 is fully developed and implemented. I see the engine has been ported to SO many platforms (including the 128-bit Dreamcast), and yet it's not natively 64-bit. I'm sure I don't have to mention all the benefits and advantages of 64-bit, but at least take into account the significant performance benefits.
Also, take into account that most modern computers, and certainly nearly all new computers are 64-bit oriented. Even some handheld devices are becoming 64-bit compatible. On nearly all current operating systems, there is a focus on 64-bit development, and only using 32-bit compatibility libraries (as mentioned in the Bennu wiki even). Even more so, windows 8, I believe, was intended to be 64-bit only, without reverse 32-bit compatibility; despite windows 8 being not much of a success so far, the intent is clear (particularly of a multi-billion dollar world-wide company ... more of a monopoly really).
I would put it to a vote, although some 64-bit supporters may have already skipped over the Bennu engine. Personally, I don't see why engines start out with 32-bit; they ought to first develop 64-bit and then later support 32-bit too. I've never seen it done though.
Anyway, please consider pushing for 64-bit native support. I think it's pretty important, especially for future development of games.
P.S. You also might want to advertise on some linux gaming sites, like Linux Game Database, and such. I only heard of it through a mention on an open-source game's forum.