Houdini is amazing, but as someone mentioned thy might lose to other dcc's if they don't make the life easier for entry-mid level artists. They have everything in place, they did the heavy lifting. IMO they should focus on simplifying things:
1. UX, ease of use! Just one example: using animated attributes in sops without the silly and unintuitive workflows in dops.
2. Camera rig, what's up with that
I want to easily put camera on a path and swirl around a pig head like a horse fly
3. Animation editor, that black color looks like someone made a hole in the monitor. Manipulating curves, copying keys, adding custom easing...
4. VEX snippets, why just give, like 3 of them? Imagine having bunch of them, the intuitive ones, or some sort of sandbox node where you can play with presets and see what happens. Maybe even being open sources so that moderators can view the community most upvoted code and update the node.
5.Velocity manipulation nodes. Having basic shapes (linear, sphere, box, tube, custom object) with vectors going inside, outside, and tangental. Then there's a blending node where you can combine them all together.