AFAIK the OM4Ti never suffered from this problem and I suspect the OM3 didn't either. The latter I really do not know. May be someone more knowledgeable can shed some light as I own one for some days now
The early O.M 4Ti did suffer from excessive battery drain because the problem was so bad that when I sold them for a living my company and some others had so many returned for this fault they refused to buy any more from Olympus U.K until they rectified the fault which was eventually traced by them to the main P.C.B.
The EOS3 and 1V also implemented multi spot metering of up to 8 points. Personally, I got to know my film's latitude and I only needed one spot to meter.
The system on both is simplified because it does not point out highlight and shadow with averages: it is doing the numerical comparison computationally then displaying the results. The midpoint could be anywhere, so too, those points in highlights and shadows. With a manual spot meter you have full control over what is being metered, how and when and where to average readings (if at all).
“The photographer must determine how he wants the finished print to look before he exposes the negative.
Before releasing the shutter, he must seek 'the flame of recognition,' a sense that the picture would reveal
the greater mystery of things...more clearly than the eyes see." ~Edward Weston, 1922.