I'd say I agree we need more twins -- be it fighters, attackers, bombers.
I don't think the Blenheim has much use. It was obsolete when the war started. It didn't have much of a career. It would be nice to have some bombers in that class (old, slow, weak bombload) for all the many early scenarios and as a stand-in for other planes, but there may be a better solution than the Blenheim. That said, the Blenheim is rather iconic... It does hold some sentimental appeal!
The A-26 IMO is one of those things folks want because it's uber. I recall more the photos I saw of them flying as level bombers in WW2, rather than as heavily-laden, bombs-under-wings, turn-fighting, cannon-armed-strafers...
I'd like an A-26 if it was just a fast level bomber. That wouldn't be worthy of perkage (or, at least not much). What I don't like is the idea of what folks describe as a super turn fighter, nimble, fast, climbs like a rocket, carries 8k or ord and has a nose bristling with enough guns to orbit Schwarzeneger. THAT setup doesn't appeal so much as the level bomber I recall first reading about when I was younger.