i haven't seen any signs that they learned their lesson. Have they ever admitted/explained how much they screwed up the PC release?Basically, they've learned their lesson for future PC ports, but it's just not worth doing much else with LR on PC besides the usual balance patches and DLC.
The fact that they are totally silent regarding all the problems is a major reason why people are so angry. Everybody can screw up a software release. But if you do, at least own up to your mistakes. Ignoring the problem just shows total disrespect towards your customers.
As nice as it is that they are responding to email questions, they can't really expect that all 50K buyers ask them directly what the status of the game is.
It shouldn't be so hard to put out some statement about what will come to the PC version and what won't.
Spending some development time might be very worthwhile for them to get some trust back from the PC community. As it is a lot of people will be very hesitant to spend money on a future Koei/Tecmo title.