We need greater mod support. Appropriate support systems in place will extend the longevity of this game tenfold. Chivalry is proof of that. I understand that SDK would take time, but I feel it is a necessary sacrifice to make based solely on its potential benefits.
Also, more transparency and communication, please! These two are so vital to maintaining a good relationship between the developers and the community.
Consider adding a second supporter DLC pack. Doing so may potentially... irritate the community, but I feel it may be necessary to ensure further development. I have no insight as to the financial status of Triternion, but surely additional income would serve as an unspoken promise to ensuring the longevity of Mordhau. Adding a crown (similar to the tournament reward) as the DLC cosmetic would be extremely popular.