Most vintage pieces only did one effect. As for size and weight; most delay pedals were very limited and there wasn’t any reverb pedals at all.
Also your rig was already huge and heavy so it didn’t really matter
Some of the best vintage pieces still hold up in sound quality because they often had analog dry and good tone even if very limited. Old Lexicon PCM units still set the bar for natural sounding reverb. 2290 is still a great delay so is the SDE 3000 . H3000 SE sounds better than the H90 to name a few old favourites.