with 300k power you can make small community like thealliance in steemit or any other and help all their members , With small community its easier to maintain friendship with all and members can achieve faster results and help you too. Also you can delegate some power to open new curation guild like curie or new anti spam community like steemcleaners . ( right now they are a little outdated and dont implement new rules ) With this you can help others and receive some % back