Complex sentence: They are also far less developed than the indirect-drive systems, and face considerably more technical problems in terms of implosion physics.Currently there is no strong consensus whether a direct-drive system would actually be less expensive to operate.
Split into simpler sentences: They are also far less developed than the indirect-drive systems, and face considerably more technical problems in terms of implosion physics. At this time there is no strong consensus on the whether a direct-drive system would actually be less expensive to operate.