Many road bikes are sold with compact 50/34 cranks and 11-28 cassettes, which are good for all around usage. So the lowest gear is 34x28, which is actually slightly higher gearing ratio than your lowest 36x30 gear. If you need more climbing ability, I would definitely recommend a 11-32 or even 11-34 cassette before changing out crank sets. Wiggle has them for super cheap: wiggle.com | Shimano CS-HG500 10 Speed Cassette (11-32/11-34) | Cassettes And Freewheels

You just have to make sure your rear mech is capable of handling the upsizing from a 30t to a 32 or 34t sprocket.

Beyond that, you could switch out to a normal compact crank to get more climbing ability (34t ring) AND more flat road speed (50t ring).