Interesting scaling.

To be safe, I'd suggest a trial period and monitoring some metrics (how long does a gang usually hold a base on average currently, how long does it hold one after the change, are there any visible changes to the spar/basing meta(s)?, etc) ensure that the change does have the desired effect and if not, roll back.

Definitely worth trying, good luck, it sounds interesting and hopefully it'll liven up things and mix up the metas in a good way!