I always carry a SAK Soldier in my pocket (except in airports - I usually forget to put it in my main bag and so it gets nabbed!) because they're durable, useful and beautifully made. When out and about, it's either my Woodlore or one of Alan Wood's stainless Bushcrafters.
Changes? Well, I would prefer both the AW blades to be tapered towards the tip - nothing radical, just a gradual one from 4mm to 3 or 2.5mm - simply to make carving turns a bit easier and maybe to improve the balance a little. In terms of the steels, both the 01 and the RWL-34 are very good in their own ways and frankly, I do not know enough about their make-up and characteristics for me to pass an informed opinion. They both work and that's good enough for me.
I have also started carrying and using a Doug Ritter folding blade, made by Benchmade. Although not deemed worthwhile by the vast majority of bushcrafty folk, this is actually a pretty damn handy blade - well made and, despite my comment above, using a fantastic steel. If only someone would start making a Woodlore-style bushcraft knife out of S30V! As steels go, this seems to be worth a serious look.