I think it would be quite a bit of time investment for the average player. But there are 2 larger flaws:
1. Breaks the reward economy. As much as we would all want it, CG is not just going to give out all those extra rewards for free.
2. More importantly it would not be feasible for lower guilds and would thus gate the extra rewards behind a "better" guild. Sure this already happens to a lesser extent, but there is a large difference between "you can only do the event with less rewards" and "those bigger guilds get the rewards from both, and you only get Hoth".
