Glad to see there are quite a number of fellow bass fishing enthusiasts. If a lake is disgusting, polluted, muddy, and full of weeds - it makes a great bass hole. It's not great for anything else worthwhile anyways. Bass are really fun and easy to catch. They are also very easily self-sustaining. I'd rather see a ton of bass in a lake like Deer, than Carp and bullheads.
Most urban lakes are a disgusting lost cause for a real trout fishery. We have a million other lakes and rivers throughout BC, better suited for trout. And don't give me bs about trout in Deer Lake. Most if not all are stocked, and are not native or wild. A lot of them probably die off in the summer anyway (like what happens in Bby Lake, due to the water temperature being way too warm. Secondly, you wouldn't want to eat trout or anything out of Deer Lake anyway. Don't get me wrong, I love trout fishing, and prefer it. But, I personally am a strict catch and release only kind of guy, and I have ZERO interest in catching boring, odd looking hatchery rainbows, who unnaturally prefer baits similar to what they're being fed at the hatchery. If the trout aren't wild, I'm not interested. I also find it unlikely that bass will swim down the creek into Burnaby lake. Why would they want to go into a little creek with barely any water or cover in it, when they have a nice big lake? They don't like faster moving water. Just my 2 cents.