The only thing id recommend modifying somehow would be maybe making the VH on each side be able to withstand more punishment then a normal VH. I say this because with only 1 VH on each side, a single plane could come over and drop it.
See your point there. If we are making up new types of bases and new bridges, why not make a "hardened" VH. But if we are stuck with standard VH's... and lets assume we are, we could add a second VH to each side. But, if we add a second VH on each side, then while each side can better withstand an attack independently, if you look at the bridge area as a whole, you have 4 VH's in basically one area. Making it an "uber" Vehicle Base. It would have to be tested to see how easy or hard to ake it would be.
Also... here is how I thought the "Bridge Bases" would look on the area map.
So each side of the bridge is essentially its own base. This also brings up the issue of how easy (or hard) they are to take for purposes of determining who has taken enough bases to win the war. 2 options here that I can see:
1) Make them as tough as a standard V Base as far as how hard they are to take.
OR
2) Dont count Bridge Bases in the total needed to win. They provide the means to GET to the bases you need... but they have no overall value in terms of victory totals.
