It's about time!
I was thinking on the lines of a "Rapid Deployment Force", where a fleet could be dispatched to a "hot spot" to assist the bigger aircraft, continually scooping/ dropping water while the big boys drop retardant.
It will actually be the other way around. Big load aircraft does not equate with big quantity drops. In an analysis (
HERE) made last year for the western U.S., the CL-415 was delivering more water than a C-130 after 150 minutes of operation, easily doubling the quantity of water delivered after 4.5 hours.
Another misconception, alas also present in the aforementioned document, is that the CL-415 only delivers water; not so! The crew can, at the flip of a switch, mix the scooped water with foam retardant contained in inner canisters.
"Using a Bombardier 415 aircraft, this effective firefighting technique takes only 12 seconds, travelling at 130 km/h (70 knots) and 410 metres (1,350 feet), to scoop up a 6,137-litre (1,621-US-gallon) water load.
The aircraft can scoop water from sites that are only two metres (6.5 feet) deep and 90 metres (300 feet) wide. When the water site is too small for a full pick-up, the Bombardier 415 aircraft takes a partial load and returns to the fire.
In addition, the Bombardier 415 aircraft doesn’t need a straight scooping path. Since the aircraft is still in "flying" mode while scooping, pilots can easily manoeuvre around river bends or visible obstacles in the water." from
HERE.
I would add that this "water hole" can be man-made if no natural water body is available in strategic areas. The CL-415 being an "amphibian", it can also work as an "ordinary" water-bomber (yes, it can be "ground loaded with water or retardant"). More information
HERE.