Well being able to take any base at any time worked fine in DAoC. you just had tons of keeps that any one can take, and a single guild could claim that keep once taken to upgrade it. You could do a similar thing in planetside, let guilds claim a base/tower and upgrade it with automated defense (enough to hold off one or two lone players, but enough to hold off a real attack), this will encourage guilds to actully defend what they claim, give them some sort of benifit for claiming it and give the whole faction a bit of a benifit too.
I just think there should be more to it in terms of reasons to take the bases/towers. They should have more of an impact on the game then just being a spawn and a place to get vehicles.
I just think there should be more to it in terms of reasons to take the bases/towers. They should have more of an impact on the game then just being a spawn and a place to get vehicles.