Hmm, on the one hand, a revival of such an important character from early SF TV/film could be worthwhile, but on the other hand, every Quatermass story to date has been written by Nigel Kneale (or based on one written by him), so having a new writer or writers take over would be a tricky proposition.
Not to mention that it seems it would be more appropriate to bring him back in a BBC serial.
But now might be a good time to bring the character back, in one form or another. The original Quatermass was a pioneer in manned spaceflight. That era is past now, but we're just at the dawn of the era of private
spaceflight, so Quatermass could be reimagined as working for a firm like SpaceX or Virgin Aerospace rather than for the government.