The mosquito is a beauty. A work of art and in my mind, the most interesting plane ever built. It could have had a much greater impact on the war if british bomber command were more imaginative and realized what they had earlier.
In the game it falls between the seats. There is not need for its range. You'll never need to load more than 50% fuel or carry DT. In some cases 25%+DT is a useful loadout. It carries a good loadout in MWA, but in LWA almost all jabos carry more. It is fast in MWA, but too slow in LWA to be meaningful. It cannot sustain high speed dives without falling apart.
The handling is probably the worst of all the planest. The tail feels heavy and accelerated stall is just nasty and will lead to immediate spin. Stall it with nose high and you may enter a deep stall, where you can't bring the nose below the horizon to recover (lots of rudder to flip it on the side is the solution). It also tends to "fish-tail" with every stick input.
Damage model is shared with the Zero. Prone to catching fire and pilot wounds. Not very durable parts either.
Some nice features it does have:
Good climb! yes it climbs great and it climbs fast. Do not believe the AH graphs as they are with 100% fuel which is A LOT, and you normally never have more than 50%. It will outclimb a light jug while it carries 4*500 lbs bombs 50% fuel. When light it really can climb well. Also, try climbing at ~200 mph while making your way to the target instead of the default 150 mph. You loose only little climb rate but gain much more ground in the process and are already at maneuvering speed.
Good dive acceleration and zoom climb. All that mass and low drag does come in handy.
Super guns. When on the offense, one of the most dangerous planes. Compensates some for being terrible on defense.
And most important - the elusive "coolness factor" is off the scale

I did a tour in it a while ago and had a blast, but it can get frustrating sometimes, especially since I like to fight from a disadvantage. Evading BnZ is difficult. I suggest taking it for some aerobatics practice to get the feel for the quirks and how to avoid them. If you can take it safely to the edge it turns out to be even a decent dogfighter.