DemonMaster
A.K.A. Fenhorn
There is no logic in the ability to buy a pikeman 1929.Why? People are complaining, that Landsknechte are usefull only in a very short time period.
This is true for the unit itself. However, as they don't obsolete and they keep their abilities with the upgrade, they (and the related SoPo) don't lose their usefullness later in the game. The only "downside" is, that is it is expensive to upgrade all the mercenaries. On the other hand, more modern mercenaries should be more expensive. So, the only thing you really lose is the 'direct attack after purchase'-ability.
For me, its perfect!
One way to change this is to let LK have its own upgrade path so when you hit riflling you instead buy another type of mercenary (riflemen replacement) and of course you could upgrade your LK to this. And then also a GW infantry replacement and so on. So if you have taken this SP you will always during the game have a mercenary available of the latest type that is known to you.
Although I do think they should obsolete them when you hit the Industrial Era or something or even with the Lancer kicks in.