I would fly AY more but at the price they charge, no.
Usually, BA are between £250-£300 with Finnair being in the region of £688. Even with the downfall in their Asian connecting traffic, their prices are still 2-3x higher than BA.

BA crew wise, still can count on one hand, with 2-3 fingers left, how many excellent crews I've had. For me, they seem to do the job with nothing above and beyond that.
At least they're not showing that completely unfunny safety video on the A320 to HEL

Haven't flown on the AY A350 since the £232 or so LHR-HEL-TLL days. Would love to again, but as I said earlier, the price differential puts me off.
Not to say I won't should I get some well priced TP run or something.

At least AY have made an effort with their lounges at their home base. Pleasure going into those, and HEL is a lovely airport for the most part compared to LHR.